{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Extended-release+metoprolol",
    "query": {
      "intervention": "Extended-release metoprolol"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 13,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Extended-release+metoprolol&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-20T15:02:15.080Z",
  "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": "NCT00661895",
      "title": "Black Education and Treatment of Hypertension (BEAT HTN)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Hydrochlorothiazide",
          "type": "DRUG"
        },
        {
          "name": "Lisinopril",
          "type": "DRUG"
        },
        {
          "name": "Lisinopril and Hydrochlorothiazide",
          "type": "DRUG"
        },
        {
          "name": "Nifedipine XL",
          "type": "DRUG"
        },
        {
          "name": "Metoprolol tartrate",
          "type": "DRUG"
        },
        {
          "name": "Atenolol",
          "type": "DRUG"
        },
        {
          "name": "Valsartan",
          "type": "DRUG"
        },
        {
          "name": "Doxazosin",
          "type": "DRUG"
        },
        {
          "name": "Clonidine",
          "type": "DRUG"
        },
        {
          "name": "Hydralazine",
          "type": "DRUG"
        },
        {
          "name": "Metoprolol succinate",
          "type": "DRUG"
        },
        {
          "name": "Amlodipine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Creighton University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "25 Years to 80 Years"
      },
      "enrollment_count": 99,
      "start_date": "2005-08",
      "completion_date": "2009-11",
      "has_results": true,
      "last_update_posted_date": "2012-12-04",
      "last_synced_at": "2026-09-20T15:02:15.080Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00661895"
    },
    {
      "nct_id": "NCT02417246",
      "title": "Open-Labeled PK-PD Studies of Metoprolol ER",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Blood Pressure"
      ],
      "interventions": [
        {
          "name": "brand name metoprolol ER",
          "type": "DRUG"
        },
        {
          "name": "Generic A",
          "type": "DRUG"
        },
        {
          "name": "Generic B",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "18 Years to 120 Years"
      },
      "enrollment_count": 61,
      "start_date": "2015-08",
      "completion_date": "2018-06-06",
      "has_results": true,
      "last_update_posted_date": "2020-02-10",
      "last_synced_at": "2026-09-20T15:02:15.080Z",
      "location_count": 2,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02417246"
    },
    {
      "nct_id": "NCT00732511",
      "title": "Coreg CR, Blood Vessel Stiffness and Blood Vessel Function",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Endothelial Function",
        "Diabetes Mellitus",
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "carvedilol",
          "type": "DRUG"
        },
        {
          "name": "metoprolol extended release",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "State University of New York - Downstate Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 40,
      "start_date": "2008-04",
      "completion_date": "2009-04",
      "has_results": false,
      "last_update_posted_date": "2011-02-10",
      "last_synced_at": "2026-09-20T15:02:15.080Z",
      "location_count": 1,
      "location_summary": "Brooklyn, New York",
      "locations": [
        {
          "city": "Brooklyn",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00732511"
    },
    {
      "nct_id": "NCT00744237",
      "title": "Study of the Glycemic Effects of Nebivolol Compared With Metoprolol and HCTZ in Diabetic Hypertensive Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypertension",
        "Type 2 Diabetes Mellitus"
      ],
      "interventions": [
        {
          "name": "Nebivolol",
          "type": "DRUG"
        },
        {
          "name": "Metoprolol ER",
          "type": "DRUG"
        },
        {
          "name": "HCTZ",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Forest Laboratories",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 231,
      "start_date": "2008-08",
      "completion_date": null,
      "has_results": true,
      "last_update_posted_date": "2011-07-29",
      "last_synced_at": "2026-09-20T15:02:15.080Z",
      "location_count": 62,
      "location_summary": "Athens, Alabama • Huntsville, Alabama • Bell Gardens, California + 54 more",
      "locations": [
        {
          "city": "Athens",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Bell Gardens",
          "state": "California"
        },
        {
          "city": "Buena Park",
          "state": "California"
        },
        {
          "city": "Chino",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00744237"
    },
    {
      "nct_id": "NCT00627861",
      "title": "Combined Renin Inhibition/Beta-blockade",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Aliskiren",
          "type": "DRUG"
        },
        {
          "name": "Extended-release metoprolol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The Rogosin Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 1,
      "start_date": "2008-11",
      "completion_date": "2010-05",
      "has_results": true,
      "last_update_posted_date": "2015-11-24",
      "last_synced_at": "2026-09-20T15:02:15.080Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00627861"
    },
    {
      "nct_id": "NCT01984164",
      "title": "CAndesartan vs LIsinopril Effects on the BRain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hypertension",
        "Mild Cognitive Impairment"
      ],
      "interventions": [
        {
          "name": "Candesartan",
          "type": "DRUG"
        },
        {
          "name": "Lisinopril",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 176,
      "start_date": "2014-08-20",
      "completion_date": "2018-12-03",
      "has_results": true,
      "last_update_posted_date": "2021-02-21",
      "last_synced_at": "2026-09-20T15:02:15.080Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01984164"
    },
    {
      "nct_id": "NCT00123903",
      "title": "COREG MR Versus TOPROL-XL On Reduction Of Microalbuminuria In Patients With Hypertension And Microalbuminuria",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Heart Failure, Congestive and Microalbuminuria"
      ],
      "interventions": [
        {
          "name": "metoprolol xl",
          "type": "DRUG"
        },
        {
          "name": "carvedilol MR",
          "type": "DRUG"
        },
        {
          "name": "lisinopril",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 1220,
      "start_date": "2005-07",
      "completion_date": "2006-05",
      "has_results": false,
      "last_update_posted_date": "2017-01-18",
      "last_synced_at": "2026-09-20T15:02:15.080Z",
      "location_count": 72,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 60 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Fullerton",
          "state": "California"
        },
        {
          "city": "Inglewood",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00123903"
    },
    {
      "nct_id": "NCT00077948",
      "title": "Enoximone Plus Extended-Release Metoprolol Succinate in Subjects With Advanced Chronic Heart Failure",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Heart Failure, Congestive"
      ],
      "interventions": [
        {
          "name": "Enoximone",
          "type": "DRUG"
        },
        {
          "name": "Metoprolol succinate",
          "type": "DRUG"
        },
        {
          "name": "Placebo to match enoximone",
          "type": "DRUG"
        },
        {
          "name": "Placebo to match metoprolol succinate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Gilead Sciences",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 175,
      "start_date": "2003-07",
      "completion_date": "2005-06",
      "has_results": false,
      "last_update_posted_date": "2014-01-10",
      "last_synced_at": "2026-09-20T15:02:15.080Z",
      "location_count": 2,
      "location_summary": "Denver, Colorado • Salt Lake City, Utah",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00077948"
    },
    {
      "nct_id": "NCT07490067",
      "title": "Mechanistic Clinical Trial Comparing the Pharmacokinetics/Pharmacodynamics of Metoprolol in Heart Failure With Reduced Ejection Fraction Patients With Low vs. High Polygenic Score",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Heart Failure With Reduced Ejection Fraction"
      ],
      "interventions": [
        {
          "name": "Metoprolol Succinate",
          "type": "DRUG"
        },
        {
          "name": "Beta-Blocker Polygenic Score",
          "type": "DEVICE"
        },
        {
          "name": "Illumina Infinium Global Diversity Array with Enhanced Pharmacogenomics (PGx)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2026-10",
      "completion_date": "2029-07",
      "has_results": false,
      "last_update_posted_date": "2026-09-01",
      "last_synced_at": "2026-09-20T15:02:15.080Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07490067"
    },
    {
      "nct_id": "NCT00547300",
      "title": "Study to Evaluate Symptoms in Patients Treated With Nebivolol or Metoprolol Extended-release (ER) for Hypertension",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Metoprolol ER",
          "type": "DRUG"
        },
        {
          "name": "Nebivolol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Forest Laboratories",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 49,
      "start_date": "2007-10-31",
      "completion_date": "2008-01-02",
      "has_results": true,
      "last_update_posted_date": "2019-05-21",
      "last_synced_at": "2026-09-20T15:02:15.080Z",
      "location_count": 24,
      "location_summary": "Birmingham, Alabama • Beverly Hills, California • Encinitas, California + 21 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Encinitas",
          "state": "California"
        },
        {
          "city": "Roseville",
          "state": "California"
        },
        {
          "city": "Tustin",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00547300"
    }
  ]
}