{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+Drug%3A+Metformin&page=2",
    "query": {
      "intervention": "Placebo Drug: Metformin",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 137,
    "total_pages": 14,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+Drug%3A+Metformin&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+Drug%3A+Metformin&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T09:25:06.972Z",
  "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": "NCT02122185",
      "title": "Metformin and Chemotherapy in Treating Patients With Stage III-IV Ovarian, Fallopian Tube, or Primary Peritoneal Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Brenner Tumor",
        "Malignant Ascites",
        "Malignant Pleural Effusion",
        "Ovarian Clear Cell Cystadenocarcinoma",
        "Ovarian Endometrioid Adenocarcinoma",
        "Ovarian Mixed Epithelial Carcinoma",
        "Ovarian Serous Cystadenocarcinoma",
        "Ovarian Undifferentiated Adenocarcinoma",
        "Recurrent Fallopian Tube Cancer",
        "Recurrent Ovarian Epithelial Cancer",
        "Recurrent Ovarian Germ Cell Tumor",
        "Recurrent Primary Peritoneal Cavity Cancer",
        "Stage IIIA Fallopian Tube Cancer",
        "Stage IIIA Ovarian Epithelial Cancer",
        "Stage IIIA Ovarian Germ Cell Tumor",
        "Stage IIIA Primary Peritoneal Cavity Cancer",
        "Stage IIIB Fallopian Tube Cancer",
        "Stage IIIB Ovarian Epithelial Cancer",
        "Stage IIIB Ovarian Germ Cell Tumor",
        "Stage IIIB Primary Peritoneal Cavity Cancer",
        "Stage IIIC Fallopian Tube Cancer",
        "Stage IIIC Ovarian Epithelial Cancer",
        "Stage IIIC Ovarian Germ Cell Tumor",
        "Stage IIIC Primary Peritoneal Cavity Cancer",
        "Stage IV Fallopian Tube Cancer",
        "Stage IV Ovarian Epithelial Cancer",
        "Stage IV Ovarian Germ Cell Tumor",
        "Stage IV Primary Peritoneal Cavity Cancer"
      ],
      "interventions": [
        {
          "name": "metformin hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        },
        {
          "name": "Chemotherapy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 111,
      "start_date": "2015-02-25",
      "completion_date": "2024-10-08",
      "has_results": true,
      "last_update_posted_date": "2026-03-27",
      "last_synced_at": "2026-10-06T09:25:06.972Z",
      "location_count": 10,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Duarte, California + 6 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Arlington Heights",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02122185"
    },
    {
      "nct_id": "NCT04640571",
      "title": "Impact of Metformin and Polysorbate 80 on Drug Absorption and Disposition",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Bile Salt Export Pump (BSEP) Transporter",
        "Polysorbate 80"
      ],
      "interventions": [
        {
          "name": "pravastatin and chenodeoxycholic acid, after metformin and placebo",
          "type": "DRUG"
        },
        {
          "name": "valacyclovir, chenodeoxycholic acid, and enalaprilat, after polysorbate 80 and placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 18,
      "start_date": "2021-04-01",
      "completion_date": "2021-11-01",
      "has_results": true,
      "last_update_posted_date": "2024-07-16",
      "last_synced_at": "2026-10-06T09:25:06.972Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04640571"
    },
    {
      "nct_id": "NCT00859898",
      "title": "Study of Dapagliflozin in Combination With Metformin XR to Initiate the Treatment of Type 2 Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Type 2 Diabetes Mellitus"
      ],
      "interventions": [
        {
          "name": "Dapagliflozin",
          "type": "DRUG"
        },
        {
          "name": "Metformin XR",
          "type": "DRUG"
        },
        {
          "name": "dapagliflozin matching Placebo",
          "type": "DRUG"
        },
        {
          "name": "metformin HCl Modified Release matching Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "77 Years",
        "sex": "ALL",
        "summary": "18 Years to 77 Years"
      },
      "enrollment_count": 1093,
      "start_date": "2009-04",
      "completion_date": "2010-05",
      "has_results": true,
      "last_update_posted_date": "2016-07-07",
      "last_synced_at": "2026-10-06T09:25:06.972Z",
      "location_count": 64,
      "location_summary": "Ozark, Alabama • Tempe, Arizona • Concord, California + 53 more",
      "locations": [
        {
          "city": "Ozark",
          "state": "Alabama"
        },
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Concord",
          "state": "California"
        },
        {
          "city": "Encinitas",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00859898"
    },
    {
      "nct_id": "NCT00004992",
      "title": "Diabetes Prevention Program",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Diabetes Mellitus, Non-Insulin-Dependent",
        "Glucose Intolerance"
      ],
      "interventions": [
        {
          "name": "Intensive lifestyle",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Metformin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "25 Years and older"
      },
      "enrollment_count": 3234,
      "start_date": "1996-07",
      "completion_date": "2001-04",
      "has_results": false,
      "last_update_posted_date": "2018-03-02",
      "last_synced_at": "2026-10-06T09:25:06.972Z",
      "location_count": 1,
      "location_summary": "Rockville, Maryland",
      "locations": [
        {
          "city": "Rockville",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00004992"
    },
    {
      "nct_id": "NCT04530747",
      "title": "Metabolic Effects of Metformin Therapy in Obstructive Sleep Apnea",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Sleep Apnea, Obstructive"
      ],
      "interventions": [
        {
          "name": "Metformin + PAP",
          "type": "DRUG"
        },
        {
          "name": "Placebo oral capsule + PAP",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pennington Biomedical Research Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "35 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "35 Years to 65 Years"
      },
      "enrollment_count": 16,
      "start_date": "2021-01-28",
      "completion_date": "2021-11-30",
      "has_results": true,
      "last_update_posted_date": "2023-01-19",
      "last_synced_at": "2026-10-06T09:25:06.972Z",
      "location_count": 1,
      "location_summary": "Baton Rouge, Louisiana",
      "locations": [
        {
          "city": "Baton Rouge",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04530747"
    },
    {
      "nct_id": "NCT03629340",
      "title": "Metformin for Pulmonary Hypertension HFpEF",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pulmonary Hypertension",
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Metformin",
          "type": "DRUG"
        },
        {
          "name": "Placebo oral capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 33,
      "start_date": "2019-02-26",
      "completion_date": "2026-02-27",
      "has_results": false,
      "last_update_posted_date": "2026-06-29",
      "last_synced_at": "2026-10-06T09:25:06.972Z",
      "location_count": 2,
      "location_summary": "San Francisco, California • Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03629340"
    },
    {
      "nct_id": "NCT00667498",
      "title": "Metabolic Effect of Metformin in Obese Insulin Resistant Adolescents With Normal Glucose Tolerance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Pediatric Obesity",
        "Insulin Resistance",
        "Hyperinsulinemia"
      ],
      "interventions": [
        {
          "name": "Metformin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "13 Years to 17 Years"
      },
      "enrollment_count": 28,
      "start_date": "2004-03",
      "completion_date": "2007-12",
      "has_results": false,
      "last_update_posted_date": "2009-02-18",
      "last_synced_at": "2026-10-06T09:25:06.972Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00667498"
    },
    {
      "nct_id": "NCT01517373",
      "title": "Study To Understand Efficacy And Safety Of Investigational Agent (PF-04937319) Compared To Approved Agent (Glimepiride) In Patients With Diabetes On Metformin",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Diabetes Mellitus, Type 2"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "PF-04937319 10 mg",
          "type": "DRUG"
        },
        {
          "name": "PF-04937319 50 mg",
          "type": "DRUG"
        },
        {
          "name": "PF-04937319 100 mg",
          "type": "DRUG"
        },
        {
          "name": "Glimepiride",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 304,
      "start_date": "2012-02",
      "completion_date": "2013-01",
      "has_results": true,
      "last_update_posted_date": "2017-01-31",
      "last_synced_at": "2026-10-06T09:25:06.972Z",
      "location_count": 23,
      "location_summary": "Roseville, California • San Diego, California • Walnut Creek, California + 17 more",
      "locations": [
        {
          "city": "Roseville",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Walnut Creek",
          "state": "California"
        },
        {
          "city": "Bradenton",
          "state": "Florida"
        },
        {
          "city": "Pembroke Pines",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01517373"
    },
    {
      "nct_id": "NCT00834652",
      "title": "Adding an Insulin-Sensitizing Medication to Depression Treatment for People Who Are Depressed and Overweight",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Depression"
      ],
      "interventions": [
        {
          "name": "Sertraline",
          "type": "DRUG"
        },
        {
          "name": "Metformin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "20 Years to 60 Years"
      },
      "enrollment_count": 206,
      "start_date": "2007-09",
      "completion_date": "2013-05",
      "has_results": true,
      "last_update_posted_date": "2018-09-10",
      "last_synced_at": "2026-10-06T09:25:06.972Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00834652"
    },
    {
      "nct_id": "NCT02229383",
      "title": "Phase III Study to Evaluate Safety and Efficacy of Added Exenatide Versus Placebo to Titrated Basal Insulin Glargine in Inadequately Controlled Patients With Type II Diabetes Mellitus",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Diabetes Mellitus"
      ],
      "interventions": [
        {
          "name": "Exenatide",
          "type": "DRUG"
        },
        {
          "name": "Exenatide matching placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "130 Years",
        "sex": "ALL",
        "summary": "18 Years to 130 Years"
      },
      "enrollment_count": 464,
      "start_date": "2014-09-06",
      "completion_date": "2016-08-29",
      "has_results": true,
      "last_update_posted_date": "2019-01-08",
      "last_synced_at": "2026-10-06T09:25:06.972Z",
      "location_count": 68,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Muscle Shoals, Alabama + 56 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Muscle Shoals",
          "state": "Alabama"
        },
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Chino",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02229383"
    }
  ]
}