[
  {
    "phenotype_id": "PH644",
    "phenotype_version_id": 1288,
    "name": "Ca Channel Blocker",
    "definition": "Objectives: \n\nTo conduct a fully independent, external validation of a research study based on one electronic health record database using a different database sampling from the same population.\n\n\nDesign: \n\nRetrospective cohort analysis of β-blocker therapy and all-cause mortality in patients with cancer.\n\n\nSetting: \n\nTwo UK national primary care databases (PCDs): the Clinical Practice Research Datalink (CPRD) and Doctors’ Independent Network (DIN).\n\n\nParticipants: \n\nCPRD data for 11 302 patients with cancer compared with published results from DIN for 3462 patients; study period January 1997 to December 2006.\n\n\nPrimary and secondary outcome measures:\n\nAll-cause mortality: overall; by treatment subgroup (β-blockers only, β-blockers plus other blood pressure lowering medicines (BPLM), other BPLMs only); and by cancer site.\n\n\nResults: \n\nUsing CPRD, β-blocker use was not associated with mortality (HR=1.03, 95% CI 0.93 to 1.14, vs patients prescribed other BPLMs only), but DIN β-blocker users had significantly higher mortality (HR=1.18, 95% CI 1.04 to 1.33). However, these HRs were not statistically different (p=0.063), but did differ for patients on β-blockers alone (CPRD=0.94, 95% CI 0.82 to 1.07; DIN=1.37, 95% CI 1.16 to 1.61; p<0.001). Results for individual cancer sites differed by study, but only significantly for prostate and pancreas cancers. Results were robust under sensitivity analyses, but we could not be certain that mortality was identically defined in both databases.\n\n\nConclusions: \n\nWe found a complex pattern of similarities and differences between databases. Overall treatment effect estimates were not statistically different, adding to a growing body of evidence that different UK PCDs produce comparable effect estimates. However, individually the two studies lead to different conclusions regarding the safety of β-blockers and some subgroup effects differed significantly. Single studies using even internally wellvalidated databases do not guarantee generalisable results, especially for subgroups, and confirmatory studies using at least one other independent data source are strongly recommended.\n\n\n\n\n\n\n\n\n",
    "implementation": "",
    "publications": [
      {
        "doi": null,
        "details": "David A Springate, Darrent M Aschroft, Evangelos Kontopantelis, Tim Doran, Ronan Ryan, David Reeves, Can analyses of electronic patient records be independently and externally validated? Study 2—the effect of β-adrenoceptor blocker therapy on cancer survival a retrospective cohort study. BMJ Open, 5(e007299), 2014."
      }
    ],
    "validation": "",
    "citation_requirements": "",
    "created": "2021-10-06T16:28:20.261606Z",
    "author": "David A Springate, Darren M Aschroft, Evangelos Kontopantelis, Tim Doran, Ronan Ryan, David Reeves",
    "collections": [
      {
        "name": "ClinicalCodes Repository",
        "value": 25
      },
      {
        "name": "Phenotype Library",
        "value": 18
      }
    ],
    "tags": null,
    "organisation": null,
    "world_access": 1,
    "updated": "2021-10-06T16:28:20.261633Z",
    "sex": [
      {
        "name": "Both",
        "value": "3"
      }
    ],
    "type": [
      {
        "name": "Drug",
        "value": "3"
      }
    ],
    "ontology": null,
    "phenoflowid": "",
    "data_sources": [
      {
        "name": "CPRD GOLD",
        "value": 5,
        "uid": "a29feafa-7bdd-44e9-b977-c9d26425e67f",
        "url": "https://healthdatagateway.org/en/dataset/694",
        "datasource_id": 694
      },
      {
        "name": "Doctors Independent Network",
        "value": 28,
        "uid": "",
        "url": "",
        "datasource_id": 28
      }
    ],
    "coding_system": [
      {
        "name": "GPRD product codes",
        "value": 14
      }
    ],
    "event_date_range": "01/01/19997 - 31/12/2006",
    "concept_information": [
      {
        "concept_id": 2064,
        "concept_version_id": 5266,
        "concept_name": "Ca Channel Blocker - Primary Care",
        "coding_system": {
          "id": 14,
          "name": "GPRD product codes",
          "description": "GPRD product codes"
        },
        "phenotype_id": "PH644",
        "phenotype_version_id": 1288,
        "phenotype_name": "Ca Channel Blocker",
        "code_attribute_header": [
          "Coding System (CPRD_product_code)",
          "Entity type",
          "Category"
        ],
        "codes": [
          {
            "code": "10135",
            "description": "NIFEDIPRESS MR modified release tablet 10mg [SANDOZ]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "10136",
            "description": "NIFEDIPRESS MR modified release tablet 20mg [DEXCEL]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "10153",
            "description": "FELENDIL XL modified release tablet 5mg [RATIOPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "10246",
            "description": "ADIPINE XL tablets 60mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "10267",
            "description": "ADIZEM XL capsules 200mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "10595",
            "description": "NIMOTOP tablets 30mg [BAYER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "10688",
            "description": "verapamil hydrochloride tablets 160mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "10832",
            "description": "SECURON tablets 80mg [ABBOTT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1118",
            "description": "verapamil hydrochloride tablets 40mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1120",
            "description": "verapamil hydrochloride tablets 80mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11223",
            "description": "ANGITIL SR capsules 90mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1130",
            "description": "VIAZEM XL capsules 300mg [GENUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11512",
            "description": "NIFEDIPRESS MR modified release tablet 10mg [DEXCEL]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11547",
            "description": "nimodipine tablets 30mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11567",
            "description": "ramipril with felodipine modified release tablet 5mg + 5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11769",
            "description": "CALCHAN MR tablets 20mg [RANBAXY]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11770",
            "description": "DILZEM SR capsules 60mg [CEPHALON]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11777",
            "description": "verapamil hydrochloride sugar free solution 40mg/5ml",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11922",
            "description": "diltiazem oral suspension 60mg/5ml",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11943",
            "description": "CARDENE capsules 20mg [ASTELLAS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11965",
            "description": "ramipril with felodipine modified release tablet 2.5mg + 2.5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11966",
            "description": "MOTENS tablets 2mg [BOEH INGL]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11972",
            "description": "VERTAB SR tablets 240mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "11973",
            "description": "CALCICARD CR controlled release tablet 120mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "12104",
            "description": "CORDILOX tablets 160mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "12392",
            "description": "UNIVER sustained release capsules 180mg [CEPHALON]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "12606",
            "description": "NIFELEASE modified release tablet 20mg [EASTERN]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "12613",
            "description": "UNIPINE XL modified release tablet 30mg [GENUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1262",
            "description": "nifedipine 12 hour modified release tablets 20mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "12639",
            "description": "DILTIAZEM HYDROCHLORIDE modified release tablet 90mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "12705",
            "description": "ANGIOZEM CR slow-release tablets 90mg [ASHBOURNE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "12875",
            "description": "CARDENE SR capsules 45mg [ASTELLAS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1289",
            "description": "TILDIEM RETARD tablets 120mg [SANOFI/AVE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1298",
            "description": "verapamil hydrochloride modified release tablet 240mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1300",
            "description": "NIFENSAR XL sustained release tablets 20mg [RHONE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13027",
            "description": "VIAZEM XL capsules 240mg [GENUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13033",
            "description": "ANGITIL XL capsules 240mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13075",
            "description": "DILZEM XL capsules 180mg [CEPHALON]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13127",
            "description": "DILZEM XL capsules 240mg [CEPHALON]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13139",
            "description": "ADIPINE XL tablets 30mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13240",
            "description": "DILZEM XL capsules 120mg [CEPHALON]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13243",
            "description": "lercanidipine hydrochloride tablets 20mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13251",
            "description": "VERA-TIL SR tablets 240mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13302",
            "description": "DILZEM SR capsules 90mg [CEPHALON]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13410",
            "description": "ANGIOZEM tablets 60mg [ASHBOURNE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13672",
            "description": "ANGIOPINE MR modified release tablet 10mg [ASHBOURNE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13699",
            "description": "ANGIOPINE LA tablets 40mg [ASHBOURNE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13856",
            "description": "VERAPRESS MR tablets 240mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13926",
            "description": "diltiazem 24 hour modified release capsules 360mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "13965",
            "description": "CORDILOX MR tablets 240mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "14300",
            "description": "ZANIDIP tablets 20mg [RECORDATI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "14305",
            "description": "VASCALPHA prolonged release tablet 10mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1449",
            "description": "nifedipine 24 hour modified release tablets 30mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "14861",
            "description": "CALCHAN MR tablets 10mg [RANBAXY]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "15117",
            "description": "nifedipine with atenolol capsules 20mg + 50mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "15221",
            "description": "DILCARDIA XL modified release capsules 180mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "15288",
            "description": "ANGITIL XL capsules 300mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1529",
            "description": "POSICOR tablets 50mg [ROCHE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1538",
            "description": "diltiazem tablets 60mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "15652",
            "description": "mibefradil tablets 50mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "15715",
            "description": "GENALAT RETARD modified release tablet 20mg [WYETH PHAR]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1574",
            "description": "verapamil hydrochloride modified release capsules 120mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "16038",
            "description": "DILZEM SR capsules 120mg [CEPHALON]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "16073",
            "description": "NIFEDIPRESS MR modified release tablet 10mg [TEVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "16162",
            "description": "amlodipine oral suspension 5mg/5ml",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "16328",
            "description": "VERAPRESS modified release tablet 240mg [DEXCEL]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "16677",
            "description": "CORDILOX tablets 80mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1684",
            "description": "BETA-ADALAT capsules 50mg + 20mg [BAYER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "16850",
            "description": "ANGIOZEM CR slow-release tablets 120mg [ASHBOURNE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1686",
            "description": "diltiazem 12 hour modified release capsules 90mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17006",
            "description": "TRIAPIN modified release tablet 5mg + 5mg [AVENTIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17325",
            "description": "CARDILATE MR tablets 10mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17338",
            "description": "NIFEDOTARD 20 MR modified release tablet 20mg [GALEN]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17342",
            "description": "NIVATEN RETARD modified release tablet 10mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17406",
            "description": "ZEMTARD XL capsules 180mg [GALEN]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17425",
            "description": "ZEMTARD XL capsules 120mg [GALEN]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17448",
            "description": "NIFEDIPRESS MR modified release tablet 10mg [STERWIN]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1747",
            "description": "verapamil hydrochloride tablets 120mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17474",
            "description": "felodipine with ramipril modified release tablet 5mg + 5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1748",
            "description": "CORDILOX tablets 120mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17492",
            "description": "ZEMTARD XL capsules 300mg [GALEN]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17557",
            "description": "FELOTENS XL tablets 5mg [GENUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17566",
            "description": "FELOTENS XL tablets 10mg [GENUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17586",
            "description": "SLOZEM capsules 300mg [MERCK SER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17599",
            "description": "VERAPRESS MR tablets 240mg [SANDOZ]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17640",
            "description": "AMLOSTIN tablets 5mg [DISCOVERY]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "17666",
            "description": "VIAZEM XL capsules 180mg [GENUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "18038",
            "description": "nisoldipine modified release tablet 20mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "18223",
            "description": "trandolapril with verapamil modified release capsules 2mg + 180mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1836",
            "description": "diltiazem 8 hour modified release tablets 60mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "18379",
            "description": "DILCARDIA SR modified release capsules 90mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "18403",
            "description": "DILTIAZEM HYDROCHLORIDE modified release capsules 180mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "18404",
            "description": "DILTIAZEM HYDROCHLORIDE SR capsules 60mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1854",
            "description": "ADALAT LA tablets 30mg [BAYER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "18606",
            "description": "diltiazem and hydrochlorothiazide modified release capsules 150mg + 12.5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "18830",
            "description": "DISOGRAM SR capsules 90mg [RANBAXY]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "18834",
            "description": "DISOGRAM SR capsules 60mg [RANBAXY]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "18852",
            "description": "DISOGRAM SR capsules 120mg [RANBAXY]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "18874",
            "description": "DISOGRAM SR capsules 180mg [RANBAXY]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "18975",
            "description": "CALCICARD tablets 60mg [3M]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "19013",
            "description": "CLINIUM tablets 120mg [LEO]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "19129",
            "description": "SYSCOR MR modified release tablet 10mg [FOREST]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "19170",
            "description": "TENSIPINE MR tablets 10mg [GENUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "19175",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 40mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "19325",
            "description": "CORDILOX injection 2.5mg/ml [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "19426",
            "description": "DISOGRAM SR capsules 240mg [RANBAXY]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "19440",
            "description": "DISOGRAM SR capsules 300mg [RANBAXY]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "19457",
            "description": "RANVERA MR tablets 240mg [RANBAXY]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "19459",
            "description": "VERAPAMIL HYDROCHLORIDE modified release tablet 240mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "19690",
            "description": "verapamil hydrochloride with trandolapril modified release capsules 180mg + 2mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "1995",
            "description": "diltiazem 12 hour modified release capsules 120mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "20257",
            "description": "CARDILATE MR tablets 20mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "20311",
            "description": "NIFEDIPRESS MR modified release tablet 20mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "20459",
            "description": "FELENDIL XL modified release tablet 10mg [RATIOPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "20579",
            "description": "TARKA capsules 180mg + 2mg [ABBOTT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "20591",
            "description": "NIFEDIPRESS MR modified release tablet 20mg [TEVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "20642",
            "description": "BI-CARZEM SR capsules 60mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "20878",
            "description": "ANGIOPINE capsules 10mg [ASHBOURNE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "20890",
            "description": "ZEMTARD XL capsules 240mg [GALEN]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "21145",
            "description": "DILCARDIA SR modified release capsules 60mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "21162",
            "description": "felodipine with ramipril modified release tablet 2.5mg + 2.5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "21216",
            "description": "HYPOLAR RETARD-10 modified release tablet 10mg [SANDOZ]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "21245",
            "description": "NIFEDIPRESS MR modified release tablet 10mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "21763",
            "description": "DILTIAZEM HYDROCHLORIDE tablets 60mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "21773",
            "description": "DILTIAZEM HYDROCHLORIDE tablets 60mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "21778",
            "description": "DILTIAZEM HYDROCHLORIDE tablets 60mg [APS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "21795",
            "description": "RETALZEM modified release tablet 60mg [KENT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "21872",
            "description": "ANGIOPINE capsules 5mg [ASHBOURNE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "21886",
            "description": "NIFEDIPRESS MR modified release tablet 20mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "219",
            "description": "diltiazem 12 hour modified release tablets 120mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "21918",
            "description": "OPTIL modified release tablet 60mg [OPUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "22019",
            "description": "CALANIF capsules 10mg [BERK]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "22142",
            "description": "CALCILAT capsules 10mg [EASTERN]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "22217",
            "description": "NIMODREL MR tablets 10mg [OPUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "22241",
            "description": "mibefradil tablets 100mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "22619",
            "description": "BRITIAZIM modified release tablet 60mg [THAMES]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "22696",
            "description": "SLOFEDIPINE SR modified release tablet 20mg [STERWIN]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2280",
            "description": "ADALAT RETARD tablets 10mg [BAYER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "22826",
            "description": "SECURON tablets 160mg [ABBOTT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "23233",
            "description": "BI-CARZEM SR capsules 90mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2343",
            "description": "ADALAT RETARD tablets 20mg [BAYER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "23505",
            "description": "ADIZEM XL PLUS controlled release capsules 150mg + 12.5mg [NAPP]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "23733",
            "description": "OPTIL SR sustained release capsules 90mg [OPUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "23736",
            "description": "HYPOLAR XL extra modified release tablet 30mg [SANDOZ]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "23805",
            "description": "nisoldipine modified release tablet 10mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "23823",
            "description": "nisoldipine modified release tablet 30mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "23872",
            "description": "BERKATENS tablets 40mg [BERK]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "24228",
            "description": "NIMODREL MR tablets 20mg [OPUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "24365",
            "description": "CARDIOPLEN XL tablets 5mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "24366",
            "description": "CARDIOPLEN XL tablets 10mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2453",
            "description": "diltiazem modified release capsules 60mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "25059",
            "description": "BERKATENS tablets 80mg [BERK]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "25132",
            "description": "NIFOPRESS MR tablets 20mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2521",
            "description": "ADALAT capsules 10mg [BAYER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2528",
            "description": "SLOZEM capsules 120mg [MERCK SER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "25572",
            "description": "FELOGEN XL tablets 5mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "25646",
            "description": "NIVATEN RETARD modified release tablet 20mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "25777",
            "description": "DILCARDIA SR modified release capsules 120mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "25919",
            "description": "NIFEDIPINE modified release tablet 20mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2592",
            "description": "VIAZEM XL capsules 120mg [GENUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2605",
            "description": "nifedipine 12 hour modified release capsules 10mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "26252",
            "description": "BERKATENS tablets 160mg [BERK]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "26265",
            "description": "CALANIF capsules 5mg [BERK]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "26267",
            "description": "OPTIL SR sustained release capsules 120mg [OPUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "26269",
            "description": "OPTIL SR sustained release capsules 180mg [OPUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "26270",
            "description": "OPTIL XL extra sustained release capsules 300mg [OPUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "26309",
            "description": "OPTIL XL extra sustained release capsules 240mg [OPUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "26337",
            "description": "CABREN SR tablets 10mg [TEVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "26460",
            "description": "DILCARDIA XL modified release capsules 240mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "26463",
            "description": "ZEMRET XL capsules 240mg [NEOLAB]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2663",
            "description": "diltiazem modified release capsules 240mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "26674",
            "description": "verapamil hydrochloride injection 5mg/2ml",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "26759",
            "description": "ZILDIL SR modified release capsules 60mg [CHANELLE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "26774",
            "description": "nifedipine oral suspension 10mg/5ml",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2686",
            "description": "DILZEM XL MR capsules 240mg [ELANPHARMA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "269",
            "description": "nifedipine capsules 5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "27135",
            "description": "DILTIAZEM SR capsules 90mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "27136",
            "description": "DILTIAZEM HYDROCHLORIDE modified release tablet 90mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "27295",
            "description": "SECURON IV injection 5mg/2ml [ABBOTT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "27401",
            "description": "KENZEM SR capsules 90mg [KENT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2746",
            "description": "CORACTEN SR modified release capsules 10mg [UCB]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "27685",
            "description": "DILTIAZEM HYDROCHLORIDE XL capsules 300mg [PLIVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2811",
            "description": "ADIZEM SR capsules 180mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "28438",
            "description": "TRIAPIN MITE modified release tablet 2.5mg + 2.5mg [AVENTIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "28688",
            "description": "NIFEDIPINE modified release tablet 10mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "28721",
            "description": "NEOFEL XL tablets 5mg [NEOLAB]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "28843",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 80mg [CELLTECH]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "28844",
            "description": "BERKATENS tablets 120mg [BERK]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2888",
            "description": "TILDIEM modified release tablet 60mg [SANOFI/AVE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "28949",
            "description": "BI-CARZEM SR capsules 120mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "29",
            "description": "amlodipine (as besilate) tablets 5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "29044",
            "description": "NEOFEL XL tablets 10mg [NEOLAB]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "29145",
            "description": "FELENDIL XL modified release tablet 2.5mg [RATIOPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "2926",
            "description": "nicardipine hydrochloride capsules 20mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "29637",
            "description": "VERAPRESS MR tablets 240mg [TEVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "29676",
            "description": "CALAZEM modified release tablet 60mg [BERK]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "30197",
            "description": "diltiazem modified release capsules 120mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "30199",
            "description": "nifedipine modified release tablet 30mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "30242",
            "description": "diltiazem modified release capsules 180mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "30462",
            "description": "ETHIMIL modified release tablet 240mg [GENUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "30473",
            "description": "CORODAY modified release tablet 20mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "30557",
            "description": "FELOGEN XL tablets 10mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3057",
            "description": "SECURON tablets 120mg [ABBOTT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3061",
            "description": "diltiazem 12 hour modified release capsules 180mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "30758",
            "description": "lidoflazine tablets 120mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "30915",
            "description": "CABREN SR tablets 2.5mg [TEVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "30991",
            "description": "CABREN SR tablets 5mg [TEVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3118",
            "description": "ADIZEM SR capsules 90mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "31336",
            "description": "SYSCOR MR modified release tablet 30mg [FOREST]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "31337",
            "description": "SYSCOR MR modified release tablet 20mg [FOREST]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "31489",
            "description": "BI-CARZEM XL capsules 240mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "31490",
            "description": "ZOLVERA oral solution 40mg/5ml [ROSEMONT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "31676",
            "description": "DILTIAZEM HYDROCHLORIDE modified release tablet 120mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "31711",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 80mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "31737",
            "description": "ZILDIL SR modified release capsules 120mg [CHANELLE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "31761",
            "description": "AMLOSTIN tablets 10mg [DISCOVERY]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "32089",
            "description": "DILTIAZEM HYDROCHLORIDE SR capsules 120mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3221",
            "description": "lacidipine tablets 4mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "32262",
            "description": "DILTIAZEM HYDROCHLORIDE tablets 60mg [CP PHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "32590",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 40mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "32595",
            "description": "AMLODIPINE tablets 5mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "32658",
            "description": "DILCARDIA XL modified release capsules 120mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "32870",
            "description": "DILTIAZEM HYDROCHLORIDE tablets 60mg [STERWIN]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "32917",
            "description": "AMLODIPINE tablets 5mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "32922",
            "description": "FELODIPINE modified release tablet 10mg [SANDOZ]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3302",
            "description": "CARDENE SR capsules 30mg [ASTELLAS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "33025",
            "description": "NIMODREL XL tablets 30mg [ZURICH]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "33091",
            "description": "FELODIPINE modified release tablet 10mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3342",
            "description": "SECURON SR tablets 240mg [ABBOTT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3343",
            "description": "HALF SECURON SR tablets 120mg [ABBOTT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "33471",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 40mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3370",
            "description": "DILZEM XL MR capsules 120mg [ELANPHARMA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "33932",
            "description": "PARMID XL tablets 5mg [SANDOZ]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34093",
            "description": "AMLODIPINE tablets 10mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34101",
            "description": "NIFEDIPINE MR modified release tablet 20mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34115",
            "description": "nifedipine modified release tablet 60mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34146",
            "description": "NIFEDIPINE MR modified release tablet 10mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34187",
            "description": "NIFEDIPINE modified release tablet 10mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34247",
            "description": "NIFEDIPINE capsules 10mg [BERK]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34377",
            "description": "DILTIAZEM HYDROCHLORIDE SR capsules 90mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34475",
            "description": "DILTIAZEM HYDROCHLORIDE modified release tablet 90mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34522",
            "description": "NIFEDIPINE capsules 5mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34581",
            "description": "DILTIAZEM HYDROCHLORIDE modified release tablet 60mg [KENT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34607",
            "description": "NIFEDIPINE capsules 5mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34824",
            "description": "DILTIAZEM HYDROCHLORIDE modified release tablet 120mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34959",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 40mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "34975",
            "description": "NIFEDIPINE capsules 5mg [TEVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35084",
            "description": "VASCALPHA prolonged release tablet 5mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35096",
            "description": "EXFORGE tablets 10mg + 160mg [NOVARTIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35173",
            "description": "valsartan with amlodipine tablets 160mg + 5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35174",
            "description": "valsartan with amlodipine tablets 80mg + 5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35189",
            "description": "amlodipine with valsartan tablets 10mg + 160mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35304",
            "description": "valsartan with amlodipine tablets 160mg + 10mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35317",
            "description": "EXFORGE tablets 5mg + 80mg [NOVARTIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35329",
            "description": "amlodipine with valsartan tablets 5mg + 80mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35343",
            "description": "amlodipine with valsartan tablets 5mg + 160mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35592",
            "description": "CARDIOPLEN XL tablets 2.5mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35646",
            "description": "NEOZIPINE XL tablets 60mg [NEOLAB]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35696",
            "description": "KENZEM SR capsules 120mg [KENT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35697",
            "description": "EXFORGE tablets 5mg + 160mg [NOVARTIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "35729",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 80mg [TEVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "36202",
            "description": "AMLODIPINE tablets 10mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "36583",
            "description": "ZEMRET XL capsules 180mg [NEOLAB]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "36620",
            "description": "PARMID XL tablets 10mg [SANDOZ]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "36664",
            "description": "ZEMRET XL capsules 300mg [NEOLAB]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3676",
            "description": "DILZEM XL MR capsules 180mg [ELANPHARMA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "37025",
            "description": "nifedipine modified release tablet 20mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3711",
            "description": "ADIPINE MR 20 modified release tablet 20mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3712",
            "description": "CORACTEN XL modified release capsules 30mg [UCB]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "37184",
            "description": "VALNI XL tablets 30mg [WINTHROP]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "37530",
            "description": "NEOZIPINE XL tablets 30mg [NEOLAB]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "37726",
            "description": "nifedipine oral suspension 100mg/5ml",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "37774",
            "description": "KENZEM SR capsules 60mg [KENT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "37897",
            "description": "FELOTENS XL tablets 2.5mg [GENUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38066",
            "description": "DILTIAZEM HYDROCHLORIDE modified release tablet 60mg [LAGAP]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38107",
            "description": "NIFEDIPINE SR tablets 30mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38434",
            "description": "KELOC SR tablets 10mg [APS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38545",
            "description": "TILDIEM LA capsules 200mg [SANOFI/AVE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38632",
            "description": "ADIZEM SR capsules 90mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38634",
            "description": "ADIZEM XL capsules 300mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38818",
            "description": "ADIZEM SR capsules 120mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38831",
            "description": "ADIZEM SR capsules 180mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38855",
            "description": "ADIZEM XL capsules 180mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38865",
            "description": "ADIZEM XL capsules 120mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38876",
            "description": "TILDIEM LA capsules 300mg [SANOFI/AVE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38882",
            "description": "ADIZEM XL capsules 240mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "38964",
            "description": "ADIZEM SR tablets 120mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "39009",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 40mg [TEVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3917",
            "description": "ISTIN tablets 5mg [PFIZER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "39171",
            "description": "BI-CARZEM SR capsules 60mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "39298",
            "description": "BI-CARZEM SR capsules 90mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3930",
            "description": "nifedipine 24 hour modified release tablets 60mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3931",
            "description": "POSICOR tablets 100mg [ROCHE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "39357",
            "description": "NEOFEL XL tablets 2.5mg [NEOLAB]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "3943",
            "description": "verapamil hydrochloride modified release capsules 240mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "39800",
            "description": "VALNI XL tablets 60mg [WINTHROP]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "39804",
            "description": "AMLODIPINE tablets 5mg [DR REDDY`S]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "39914",
            "description": "AMLODIPINE tablets 5mg [TEVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "39984",
            "description": "SEVIKAR film coated tablets 20mg + 5mg [DAIIC-SANK]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "40074",
            "description": "nifedipine capsules 20mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "40316",
            "description": "olmesartan medoxomil with amlodipine tablets 20mg + 5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "40405",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 120mg [TEVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "40633",
            "description": "VASCALPHA prolonged release tablet 5mg [ALMUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "40639",
            "description": "olmesartan medoxomil with amlodipine tablets 40mg + 5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "40668",
            "description": "olmesartan medoxomil with amlodipine tablets 40mg + 10mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "410",
            "description": "nifedipine 12 hour modified release tablets 10mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "41203",
            "description": "SEVIKAR film coated tablets 40mg + 10mg [DAIIC-SANK]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "41205",
            "description": "SEVIKAR film coated tablets 40mg + 5mg [DAIIC-SANK]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "41489",
            "description": "BI-CARZEM SR capsules 120mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "41586",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 80mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "41635",
            "description": "DILTIAZEM HYDROCHLORIDE tablets 60mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "41679",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 80mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "41693",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 120mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "41979",
            "description": "ADIPINE LA extra modified release tablet 30mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "42210",
            "description": "AMLODIPINE tablets 10mg [WINTHROP]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "4227",
            "description": "ADALAT LA tablets 60mg [BAYER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "4239",
            "description": "ADIPINE MR 10 modified release tablet 10mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "42625",
            "description": "VERA-TIL SR tablets 120mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "42731",
            "description": "DILTIAZEM SR capsules 120mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "42804",
            "description": "DILTIAZEM HYDROCHLORIDE XL capsules 180mg [PLIVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "42819",
            "description": "DILTIAZEM XL capsules 240mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "42912",
            "description": "NIFEDIPINE capsules 10mg [TEVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "4308",
            "description": "DILZEM SR capsules 90mg [ELANPHARMA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43222",
            "description": "VALNI RETARD tablets 20mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43394",
            "description": "PINEFELD XL tablets 10mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43410",
            "description": "nifedipine extra modified release tablet 60mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43430",
            "description": "DILTIAZEM HYDROCHLORIDE modified release tablet 120mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43470",
            "description": "AMLODIPINE tablets 5mg [WOCKHARDT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43511",
            "description": "NIFEDIPINE capsules 10mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43512",
            "description": "FELODIPINE modified release tablet 5mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43515",
            "description": "NIFEDIPINE capsules 10mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43753",
            "description": "ADALAT LA 30 prolonged release tablet [BAYER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43790",
            "description": "VASCALPHA prolonged release tablet 10mg [ALMUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43818",
            "description": "ADALAT LA 60 prolonged release tablet [BAYER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43879",
            "description": "VERA-TIL SR tablets 240mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "43880",
            "description": "AMLODIPINE tablets 5mg [ALMUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "4408",
            "description": "SLOZEM capsules 240mg [MERCK SER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "44192",
            "description": "ZEMRET XL capsules 240mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "44859",
            "description": "FELODIPINE SR tablets 5mg [APS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "44887",
            "description": "BI-CARZEM XL capsules 300mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "45051",
            "description": "VERAPAMIL HYDROCHLORIDE modified release tablet 240mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "45070",
            "description": "amlodipine oral suspension 10mg/5ml",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "452",
            "description": "nifedipine capsules 10mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "45279",
            "description": "AMLODIPINE tablets 5mg [SANDOZ]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "45292",
            "description": "NICARDIPINE capsules 30mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "45308",
            "description": "VERAPAMIL SR tablets 240mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "4542",
            "description": "atenolol with nifedipine capsules 50mg + 20mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "45685",
            "description": "ADANIF XL prolonged release tablet 30mg [FOCUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "45759",
            "description": "DILTIAZEM HYDROCHLORIDE XL capsules 240mg [PLIVA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "46009",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 120mg [KENT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "46233",
            "description": "amlodipine oral liquid",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "4635",
            "description": "diltiazem 24 hour modified release capsules 200mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "46355",
            "description": "SEVIKAR HCT tablets 20mg + 5mg + 12.5mg [DAIIC-SANK]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "46445",
            "description": "NIFEDIPINE capsules 10mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "46687",
            "description": "olmesartan medoxomil with amlodipine and hydrochlorothiazide tablets 20mg + 5mg + 12.5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "46715",
            "description": "olmesartan medoxomil with amlodipine and hydrochlorothiazide tablets 40mg + 10mg + 12.5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "46724",
            "description": "amlodipine oral solution 5mg/5ml",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "46792",
            "description": "olmesartan medoxomil with amlodipine and hydrochlorothiazide tablets 40mg + 5mg + 12.5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "46884",
            "description": "VERAPAMIL HYDROCHLORIDE modified release tablet 240mg [SANDOZ]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "46887",
            "description": "ADANIF XL prolonged release tablet 60mg [FOCUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "46937",
            "description": "DILTIAZEM HYDROCHLORIDE tablets 60mg [ACTAVIS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "46955",
            "description": "VERAPAMIL HYDROCHLORIDE tablets 80mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "47002",
            "description": "amlodipine sugar free oral suspension 10mg/5ml",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "47027",
            "description": "NIFEDIPINE modified release tablet 10mg [KENT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "47217",
            "description": "ADIPINE LA extra modified release tablet 60mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "47222",
            "description": "VERAPAMIL HYDROCHLORIDE modified release tablet 120mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "47230",
            "description": "VERAPAMIL HYDROCHLORIDE MR tablets 240mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "47285",
            "description": "NIFEDIPINE XL tablets 60mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "4732",
            "description": "diltiazem 12 hour modified release tablets 90mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "47331",
            "description": "LERCANIDIPINE tablets 10mg [GEN (UK)]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "47415",
            "description": "DILTIAZEM SR capsules 60mg [HILLCROSS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "47467",
            "description": "olmesartan medoxomil with amlodipine and hydrochlorothiazide tablets 40mg + 5mg + 25mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "4808",
            "description": "diltiazem 24 hour modified release capsules 240mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "4852",
            "description": "ADIZEM SR tablets 120mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "4856",
            "description": "CORACTEN SR modified release capsules 20mg [UCB]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "491",
            "description": "felodipine modified release tablet 2.5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "4923",
            "description": "diltiazem 24 hour modified release capsules 180mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "4939",
            "description": "CORACTEN XL modified release capsules 60mg [UCB]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "501",
            "description": "felodipine modified release tablet 5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5054",
            "description": "ANGITIL SR capsules 180mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5158",
            "description": "lacidipine tablets 2mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5162",
            "description": "nifedipine 24 hour modified release capsules 30mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "517",
            "description": "ADIZEM SR capsules 120mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5181",
            "description": "ANGIOPINE MR tablets 20mg [ASHBOURNE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5194",
            "description": "DILZEM SR capsules 120mg [ELANPHARMA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5234",
            "description": "SLOZEM capsules 180mg [MERCK SER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5277",
            "description": "FORTIPINE LA40 tablets 40mg [GOLDSHIELD]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5296",
            "description": "TILDIEM LA capsules 300mg [SANOFI/AVE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5326",
            "description": "diltiazem 24 hour modified release capsules 300mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5348",
            "description": "diltiazem 24 hour modified release capsules 300mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "536",
            "description": "TILDIEM LA capsules 200mg [SANOFI/AVE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "541",
            "description": "ADALAT LA 20 prolonged release tablet [BAYER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5477",
            "description": "nicardipine hydrochloride modified release capsules 30mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5513",
            "description": "DILZEM SR capsules 60mg [ELANPHARMA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5570",
            "description": "ZANIDIP tablets 10mg [RECORDATI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5593",
            "description": "lercanidipine hydrochloride tablets 10mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "568",
            "description": "felodipine modified release tablet 10mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5806",
            "description": "TENSIPINE MR tablets 20mg [GENUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "5914",
            "description": "ISTIN tablets 10mg [PFIZER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "6309",
            "description": "ADIZEM XL capsules 300mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "636",
            "description": "diltiazem 12 hour modified release capsules 60mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "6477",
            "description": "amlodipine (as maleate) tablets 10mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "6510",
            "description": "UNIVER sustained release capsules 120mg [CEPHALON]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "662",
            "description": "ADALAT capsules 5mg [BAYER]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "6856",
            "description": "amlodipine tablets 10mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "700",
            "description": "VERA-TIL SR tablets 120mg [TILLOMED]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "71",
            "description": "amlodipine (as besilate) tablets 10mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "7280",
            "description": "PLENDIL extended release tablets 10mg [ASTRAZENEC]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "729",
            "description": "amlodipine (as maleate) tablets 5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "737",
            "description": "nifedipine 12 hour modified release capsules 20mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "7398",
            "description": "VIAZEM XL capsules 360mg [GENUS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "749",
            "description": "amlodipine tablets 5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "7541",
            "description": "NIFOPRESS RETARD modified release tablet 20mg [GOLDSHIELD]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "7562",
            "description": "CARDENE capsules 30mg [ASTELLAS]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "7681",
            "description": "SYNADRIN tablets 60mg [HOECHST]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "793",
            "description": "ADIZEM XL capsules 240mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "8201",
            "description": "nicardipine hydrochloride capsules 30mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "8213",
            "description": "nifedipine 24 hour modified release tablets 20mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "8257",
            "description": "PRESCAL tablets 2.5mg [NOV/CIBA]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "8310",
            "description": "isradipine tablets 2.5mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "8524",
            "description": "SECURON tablets 40mg [ABBOTT]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "8558",
            "description": "ADIZEM XL capsules 120mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "8642",
            "description": "TENIF capsules 50mg + 20mg [ASTRAZENEC]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "8759",
            "description": "verapamil hydrochloride modified release tablet 120mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "8884",
            "description": "CORDILOX tablets 40mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "8945",
            "description": "UNIVER sustained release capsules 240mg [CEPHALON]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "8975",
            "description": "verapamil hydrochloride modified release capsules 180mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9240",
            "description": "ADIZEM XL capsules 180mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9269",
            "description": "nifedipine 24 hour modified release tablets 40mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9334",
            "description": "PLENDIL extended release tablets 2.5mg [ASTRAZENEC]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9374",
            "description": "ADIZEM modified release tablet 60mg [NAPPPHARM]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9386",
            "description": "nicardipine hydrochloride modified release capsules 45mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "939",
            "description": "TILDIEM RETARD tablets 90mg [SANOFI/AVE]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9410",
            "description": "ANGITIL SR capsules 120mg [CHIESI]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9437",
            "description": "PLENDIL extended release tablets 5mg [ASTRAZENEC]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9485",
            "description": "HYPOLAR RETARD-20 modified release tablet 20mg [SANDOZ]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9553",
            "description": "SLOFEDIPINE XL modified release tablet 60mg [WINTHROP]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9569",
            "description": "verapamil hydrochloride modified release tablet 120mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9573",
            "description": "SLOFEDIPINE XL modified release tablet 30mg [WINTHROP]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9670",
            "description": "MOTENS tablets 4mg [BOEH INGL]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9708",
            "description": "diltiazem 24 hour modified release capsules 120mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9723",
            "description": "CALCICARD CR controlled release tablet 90mg [IVAX]",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          },
          {
            "code": "9750",
            "description": "nifedipine 24 hour modified release capsules 60mg",
            "attributes": {
              "Coding System (CPRD_product_code)": "CPRD_product_code",
              "Entity type": "res24: ca_channel_blockers",
              "Category": "drug"
            }
          }
        ]
      }
    ],
    "status": 2,
    "doi": "https://doi.org/10.48533/6fv2-s053",
    "is_deleted": null,
    "publish_status": 2,
    "owner": "ieuan.scanlon",
    "template": {
      "id": 1,
      "name": "Clinical-Coded Phenotype",
      "description": "Phenotype definitions that are based on lists of clinical codes, or algorithms using clinical codes.",
      "version_id": 1
    },
    "versions": [
      {
        "version_id": 1288,
        "version_name": "Ca Channel Blocker",
        "version_date": "2021-10-06T16:28:20.288302Z",
        "is_published": true,
        "is_latest": true
      }
    ]
  }
]