{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Progesterone+Capsule",
    "query": {
      "intervention": "Progesterone Capsule"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 48,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Progesterone+Capsule&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T01:09:21.714Z",
  "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": "NCT00154180",
      "title": "Kronos Early Estrogen Prevention Study (KEEPS)",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Menopause",
        "Arteriosclerosis"
      ],
      "interventions": [
        {
          "name": "Conjugated equine estrogens 0.45 mg/day",
          "type": "DRUG"
        },
        {
          "name": "Transdermal estradiol, 50 mcg/day",
          "type": "DRUG"
        },
        {
          "name": "Micronized progesterone, 200 mg/day x 12 d/month",
          "type": "DRUG"
        },
        {
          "name": "CEE , progesterone, estradiol patch or placebo for each",
          "type": "DRUG"
        },
        {
          "name": "CEE, progesterone, transdermal patch or the placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Kronos Longevity Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "42 Years",
        "maximum_age": "58 Years",
        "sex": "FEMALE",
        "summary": "42 Years to 58 Years · Female only"
      },
      "enrollment_count": 728,
      "start_date": "2005-09",
      "completion_date": "2012-07",
      "has_results": false,
      "last_update_posted_date": "2009-09-14",
      "last_synced_at": "2026-09-06T01:09:21.714Z",
      "location_count": 9,
      "location_summary": "Phoenix, Arizona • San Francisco, California • New Haven, Connecticut + 6 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00154180"
    },
    {
      "nct_id": "NCT06238700",
      "title": "Study on Allopregnanolone and Depression in Women Across the Menopause Transition",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Depression"
      ],
      "interventions": [
        {
          "name": "pregnenolone",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Beth Israel Deaconess Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "40 Years to 60 Years · Female only"
      },
      "enrollment_count": 80,
      "start_date": "2026-05-01",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-26",
      "last_synced_at": "2026-09-06T01:09:21.714Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06238700"
    },
    {
      "nct_id": "NCT06610305",
      "title": "Ovarian Hormone Withdrawal, Anhedonia, and Reward Sensitivity in Women With Premenstrual Exacerbations of Depression",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Major Depressive Disorder"
      ],
      "interventions": [
        {
          "name": "Transdermal estradiol",
          "type": "DRUG"
        },
        {
          "name": "Progesterone",
          "type": "DRUG"
        },
        {
          "name": "Transdermal placebo patch",
          "type": "DRUG"
        },
        {
          "name": "placebo capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 75,
      "start_date": "2024-09-02",
      "completion_date": "2028-06-01",
      "has_results": false,
      "last_update_posted_date": "2025-10-29",
      "last_synced_at": "2026-09-06T01:09:21.714Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06610305"
    },
    {
      "nct_id": "NCT00808132",
      "title": "Study Evaluating The Effects Of Bazedoxifene/Conjugated Estrogens On Endometrial Safety And Postmenopausal Osteoporosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Menopause",
        "Osteoporosis"
      ],
      "interventions": [
        {
          "name": "bazedoxifene 20 mg/ conjugated estrogens 0.45 mg",
          "type": "DRUG"
        },
        {
          "name": "bazedoxifene 20 mg/ conjugated estrogens 0.625 mg",
          "type": "DRUG"
        },
        {
          "name": "bazedoxifene 20 mg",
          "type": "DRUG"
        },
        {
          "name": "conjugated estrogens 0.45 mg/ medroxyprogesterone acetate 1.5 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "64 Years",
        "sex": "FEMALE",
        "summary": "40 Years to 64 Years · Female only"
      },
      "enrollment_count": 1886,
      "start_date": "2009-01",
      "completion_date": "2011-02",
      "has_results": true,
      "last_update_posted_date": "2014-04-08",
      "last_synced_at": "2026-09-06T01:09:21.714Z",
      "location_count": 143,
      "location_summary": "Birmingham, Alabama • Mobile, Alabama • Chandler, Arizona + 119 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00808132"
    },
    {
      "nct_id": "NCT03003949",
      "title": "The Menopause Transition: Estrogen Variability, Stress Reactivity and Mood",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Perimenopausal Disorder",
        "Stress, Emotional"
      ],
      "interventions": [
        {
          "name": "Estradiol Patch, 0.1 Mg/24 Hours Weekly Transdermal Film, Extended Release",
          "type": "DRUG"
        },
        {
          "name": "Placebo Patch",
          "type": "DRUG"
        },
        {
          "name": "Progesterone Capsule",
          "type": "DRUG"
        },
        {
          "name": "Placebo Oral Capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "45 Years to 60 Years · Female only"
      },
      "enrollment_count": 82,
      "start_date": "2017-01-24",
      "completion_date": "2020-05-10",
      "has_results": true,
      "last_update_posted_date": "2021-03-26",
      "last_synced_at": "2026-09-06T01:09:21.714Z",
      "location_count": 2,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03003949"
    },
    {
      "nct_id": "NCT00196391",
      "title": "A Trial to Evaluate DR-2021 in Women With Secondary Amenorrhea",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Amenorrhea"
      ],
      "interventions": [
        {
          "name": "DR-2021a",
          "type": "DRUG"
        },
        {
          "name": "DR-2021b",
          "type": "DRUG"
        },
        {
          "name": "DR-2021c",
          "type": "DRUG"
        },
        {
          "name": "DR-2021d",
          "type": "DRUG"
        },
        {
          "name": "DR-2021e",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Duramed Research",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 180,
      "start_date": "2005-09",
      "completion_date": "2007-04",
      "has_results": false,
      "last_update_posted_date": "2014-07-30",
      "last_synced_at": "2026-09-06T01:09:21.714Z",
      "location_count": 27,
      "location_summary": "Mobile, Alabama • Phoenix, Arizona • Tucson, Arizona + 22 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Carmichael",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00196391"
    },
    {
      "nct_id": "NCT02513940",
      "title": "Influence of Testosterone Administration on Drug-Induced QT Interval Prolongation and Torsades de Pointes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Long QT Syndrome"
      ],
      "interventions": [
        {
          "name": "Testosterone",
          "type": "DRUG"
        },
        {
          "name": "Progesterone",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Ibutilide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "65 Years and older · Male only"
      },
      "enrollment_count": 14,
      "start_date": "2016-05",
      "completion_date": "2017-10-19",
      "has_results": true,
      "last_update_posted_date": "2019-08-28",
      "last_synced_at": "2026-09-06T01:09:21.714Z",
      "location_count": 1,
      "location_summary": "Indianapolis, Indiana",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02513940"
    },
    {
      "nct_id": "NCT02518594",
      "title": "A Trial of Pessary and Progesterone for Preterm Prevention in Twin Gestation With a Short Cervix",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Short Cervical Length"
      ],
      "interventions": [
        {
          "name": "Vaginal progesterone",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Arabin Pessary",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "The George Washington University Biostatistics Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 1311,
      "start_date": "2015-11-13",
      "completion_date": "2025-02-18",
      "has_results": true,
      "last_update_posted_date": "2026-06-25",
      "last_synced_at": "2026-09-06T01:09:21.714Z",
      "location_count": 16,
      "location_summary": "Birmingham, Alabama • San Francisco, California • Denver, Colorado + 12 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02518594"
    },
    {
      "nct_id": "NCT04225221",
      "title": "Neurobiology of Bulimia Nervosa",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Bulimia Nervosa"
      ],
      "interventions": [
        {
          "name": "Estradiol",
          "type": "DRUG"
        },
        {
          "name": "Micronized progesterone",
          "type": "DRUG"
        },
        {
          "name": "Leuprolide Acetate",
          "type": "DRUG"
        },
        {
          "name": "Placebo Oral Capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "42 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 42 Years · Female only"
      },
      "enrollment_count": 10,
      "start_date": "2020-02-24",
      "completion_date": "2022-04-04",
      "has_results": true,
      "last_update_posted_date": "2022-07-26",
      "last_synced_at": "2026-09-06T01:09:21.714Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04225221"
    },
    {
      "nct_id": "NCT04833140",
      "title": "Estrogen Administration for the Treatment of NASH in Postmenopausal Women",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "NASH - Nonalcoholic Steatohepatitis"
      ],
      "interventions": [
        {
          "name": "Estradiol patch",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "70 Years",
        "sex": "FEMALE",
        "summary": "45 Years to 70 Years · Female only"
      },
      "enrollment_count": 50,
      "start_date": "2021-12-02",
      "completion_date": "2027-07-09",
      "has_results": false,
      "last_update_posted_date": "2026-08-07",
      "last_synced_at": "2026-09-06T01:09:21.714Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04833140"
    }
  ]
}