{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Metformin+%2B+Placebo",
    "query": {
      "intervention": "Metformin + Placebo"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 421,
    "total_pages": 43,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Metformin+%2B+Placebo&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-15T14:49:39.004Z",
  "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": "NCT04029480",
      "title": "Ertugliflozin Type 2 Diabetes Mellitus (T2DM) Pediatric Study (MK-8835/PF-04971729) (MK-8835-059)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Type 2 Diabetes Mellitus"
      ],
      "interventions": [
        {
          "name": "Ertugliflozin 5 mg",
          "type": "DRUG"
        },
        {
          "name": "Ertugliflozin 15 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo to ertugliflozin 15 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo to ertugliflozin 5 mg",
          "type": "DRUG"
        },
        {
          "name": "Insulin",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Metformin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "Merck Sharp & Dohme LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "10 Years to 17 Years"
      },
      "enrollment_count": 166,
      "start_date": "2019-10-08",
      "completion_date": "2025-04-11",
      "has_results": true,
      "last_update_posted_date": "2025-10-31",
      "last_synced_at": "2026-09-15T14:49:39.004Z",
      "location_count": 11,
      "location_summary": "Birmingham, Alabama • Los Angeles, California • Sacramento, California + 8 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04029480"
    },
    {
      "nct_id": "NCT02202161",
      "title": "A Study Investigating Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of GSK2330672 Administered With Metformin to Type 2 Diabetes Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Diabetes Mellitus, Type 2"
      ],
      "interventions": [
        {
          "name": "GSK2330672",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Sitagliptin",
          "type": "DRUG"
        },
        {
          "name": "Metformin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "30 Years to 64 Years"
      },
      "enrollment_count": 70,
      "start_date": "2014-08-27",
      "completion_date": "2015-01-30",
      "has_results": true,
      "last_update_posted_date": "2017-11-06",
      "last_synced_at": "2026-09-15T14:49:39.004Z",
      "location_count": 4,
      "location_summary": "Chula Vista, California • Miami, Florida • Baltimore, Maryland + 1 more",
      "locations": [
        {
          "city": "Chula Vista",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02202161"
    },
    {
      "nct_id": "NCT01923181",
      "title": "Multiple Dose Trial Examining Dose Range, Escalation and Efficacy of Oral Semaglutide in Subjects With Type 2 Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Diabetes",
        "Diabetes Mellitus, Type 2"
      ],
      "interventions": [
        {
          "name": "semaglutide",
          "type": "DRUG"
        },
        {
          "name": "oral placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novo Nordisk A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 632,
      "start_date": "2013-12-02",
      "completion_date": "2014-12-11",
      "has_results": true,
      "last_update_posted_date": "2021-01-15",
      "last_synced_at": "2026-09-15T14:49:39.004Z",
      "location_count": 40,
      "location_summary": "Tucson, Arizona • Chula Vista, California • Long Beach, California + 34 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Chula Vista",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Poway",
          "state": "California"
        },
        {
          "city": "Santa Ana",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01923181"
    },
    {
      "nct_id": "NCT02682121",
      "title": "Mitochondrial-related Platelet Transcript Expression Levels in Pre-diabetic Subjects Randomized to Metformin or Placebo",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Prediabetes"
      ],
      "interventions": [
        {
          "name": "Metformin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 55,
      "start_date": "2012-04",
      "completion_date": "2017-01",
      "has_results": false,
      "last_update_posted_date": "2017-01-30",
      "last_synced_at": "2026-09-15T14:49:39.004Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02682121"
    },
    {
      "nct_id": "NCT01280409",
      "title": "Metformin Postpartum for GDM RCT for Reduced Weight Retention",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Diabetes, Gestational"
      ],
      "interventions": [
        {
          "name": "Metformin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 49 Years · Female only"
      },
      "enrollment_count": 114,
      "start_date": "2011-01",
      "completion_date": "2014-08",
      "has_results": true,
      "last_update_posted_date": "2018-11-28",
      "last_synced_at": "2026-09-15T14:49:39.004Z",
      "location_count": 2,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01280409"
    },
    {
      "nct_id": "NCT05949008",
      "title": "Effect of Metformin, a Drug Used to Treat Diabetes, vs Placebo",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "NIDDM",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Metformin Extended Release (ER) Oral Tablet",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2023-11-22",
      "completion_date": "2028-07-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-08",
      "last_synced_at": "2026-09-15T14:49:39.004Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05949008"
    },
    {
      "nct_id": "NCT06042855",
      "title": "ACTIV-6: COVID-19 Study of Repurposed Medications - Arm G (Metformin)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Metformin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Susanna Naggie, MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "30 Years and older"
      },
      "enrollment_count": 3214,
      "start_date": "2023-09-05",
      "completion_date": "2024-11-04",
      "has_results": true,
      "last_update_posted_date": "2025-11-18",
      "last_synced_at": "2026-09-15T14:49:39.004Z",
      "location_count": 110,
      "location_summary": "Chandler, Arizona • Gilbert, Arizona • Mesa, Arizona + 96 more",
      "locations": [
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Peoria",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06042855"
    },
    {
      "nct_id": "NCT00976937",
      "title": "24-week Study Comparing Lixisenatide to Sitagliptin as add-on to Metformin in Obese Type 2 Diabetic Patients Younger Than 50 Years",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Type 2 Diabetes Mellitus"
      ],
      "interventions": [
        {
          "name": "Lixisenatide (AVE0010)",
          "type": "DRUG"
        },
        {
          "name": "Lixisenatide Placebo",
          "type": "DRUG"
        },
        {
          "name": "Pen auto-injector",
          "type": "DEVICE"
        },
        {
          "name": "Sitagliptin",
          "type": "DRUG"
        },
        {
          "name": "Sitagliptin Placebo",
          "type": "DRUG"
        },
        {
          "name": "Metformin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Sanofi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 319,
      "start_date": "2009-08",
      "completion_date": "2011-03",
      "has_results": true,
      "last_update_posted_date": "2016-10-11",
      "last_synced_at": "2026-09-15T14:49:39.004Z",
      "location_count": 21,
      "location_summary": "Montgomery, Alabama • Muscle Shoals, Alabama • Mesa, Arizona + 17 more",
      "locations": [
        {
          "city": "Montgomery",
          "state": "Alabama"
        },
        {
          "city": "Muscle Shoals",
          "state": "Alabama"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Paramount",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00976937"
    },
    {
      "nct_id": "NCT00995345",
      "title": "Safety and Efficacy of Once-Daily KRP-104 in Type 2 Diabetics With Inadequate Glycemic Control on Metformin Alone",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Type 2 Diabetes"
      ],
      "interventions": [
        {
          "name": "KRP-104",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ActivX Biosciences, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 403,
      "start_date": "2009-10",
      "completion_date": "2011-01",
      "has_results": true,
      "last_update_posted_date": "2014-06-26",
      "last_synced_at": "2026-09-15T14:49:39.004Z",
      "location_count": 17,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 14 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Valley Village",
          "state": "California"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00995345"
    },
    {
      "nct_id": "NCT00366301",
      "title": "The LANCET Trial: A Trial of Long-acting Insulin Injection to Reduce C-reactive Protein in Patients With Type 2 Diabetes",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Type 2 Diabetes"
      ],
      "interventions": [
        {
          "name": "Insulin glargine injection",
          "type": "DRUG"
        },
        {
          "name": "metformin",
          "type": "DRUG"
        },
        {
          "name": "Placebo pill",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "79 Years",
        "sex": "ALL",
        "summary": "18 Years to 79 Years"
      },
      "enrollment_count": 500,
      "start_date": "2006-08",
      "completion_date": "2009-04",
      "has_results": true,
      "last_update_posted_date": "2010-11-25",
      "last_synced_at": "2026-09-15T14:49:39.004Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00366301"
    }
  ]
}