{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Verapamil+ER",
    "query": {
      "intervention": "Verapamil ER"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-10T08:38:45.446Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT03150524",
      "title": "RCVS: The Rational Approach to Diagnosis and Treatment",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Reversible Cerebral Vasoconstriction Syndrome"
      ],
      "interventions": [
        {
          "name": "TCD- cerebral blood flow velocities",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Headache pain score",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Neurological examination",
          "type": "OTHER"
        },
        {
          "name": "Repeat Neuroimaging",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Nimodipine",
          "type": "DRUG"
        },
        {
          "name": "Verapamil ER",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "BEHAVIORAL",
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2017-07-01",
      "completion_date": "2019-05-31",
      "has_results": false,
      "last_update_posted_date": "2019-09-18",
      "last_synced_at": "2026-09-10T08:38:45.446Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03150524"
    },
    {
      "nct_id": "NCT07688070",
      "title": "Verapamil Effect in Cystic Fibrosis-related Dysglycemia",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cystic Fibrosis Related Diabetes",
        "Cystic Fibrosis (CF)",
        "Abnormal Glucose Tolerance"
      ],
      "interventions": [
        {
          "name": "Verapamil Hydrochloride",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rhode Island Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "14 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2026-08-01",
      "completion_date": "2028-08-31",
      "has_results": false,
      "last_update_posted_date": "2026-07-09",
      "last_synced_at": "2026-09-10T08:38:45.446Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts • Providence, Rhode Island",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07688070"
    },
    {
      "nct_id": "NCT01471704",
      "title": "Study Investigating the Pharmacokinetic Interaction Between INX-08189 and Verapamil HCL ER in Healthy Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "INX-08189 50 mg",
          "type": "DRUG"
        },
        {
          "name": "240 mg verapamil HCL ER",
          "type": "DRUG"
        },
        {
          "name": "50 mg dose of INX-08189 and 240 mg verapamil HCL ER",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bristol-Myers Squibb",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 24,
      "start_date": "2011-10",
      "completion_date": "2011-11",
      "has_results": false,
      "last_update_posted_date": "2012-06-22",
      "last_synced_at": "2026-09-10T08:38:45.446Z",
      "location_count": 1,
      "location_summary": "Saint Paul, Minnesota",
      "locations": [
        {
          "city": "Saint Paul",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01471704"
    },
    {
      "nct_id": "NCT00983242",
      "title": "Drug-Drug Interaction Between Colchicine and Verapamil ER",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Pharmacokinetics"
      ],
      "interventions": [
        {
          "name": "Colchicine",
          "type": "DRUG"
        },
        {
          "name": "Verapamil HCl ER",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mutual Pharmaceutical Company, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 24,
      "start_date": "2008-09",
      "completion_date": "2008-10",
      "has_results": true,
      "last_update_posted_date": "2009-10-15",
      "last_synced_at": "2026-09-10T08:38:45.446Z",
      "location_count": 1,
      "location_summary": "East Grand Forks, Minnesota",
      "locations": [
        {
          "city": "East Grand Forks",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00983242"
    },
    {
      "nct_id": "NCT03070470",
      "title": "CiPA Phase 1 ECG Biomarker Validation Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Drug-induced QT Prolongation",
        "Pharmacokinetics",
        "Pharmacodynamics"
      ],
      "interventions": [
        {
          "name": "Ranolazine",
          "type": "DRUG"
        },
        {
          "name": "Verapamil",
          "type": "DRUG"
        },
        {
          "name": "Lopinavir / Ritonavir",
          "type": "DRUG"
        },
        {
          "name": "Chloroquine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Dofetilide and Diltiazem",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Food and Drug Administration (FDA)",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 60,
      "start_date": "2017-03-14",
      "completion_date": "2017-06-26",
      "has_results": true,
      "last_update_posted_date": "2020-01-18",
      "last_synced_at": "2026-09-10T08:38:45.446Z",
      "location_count": 1,
      "location_summary": "West Bend, Wisconsin",
      "locations": [
        {
          "city": "West Bend",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03070470"
    }
  ]
}