{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Progesterone&page=3",
    "query": {
      "intervention": "Progesterone",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 453,
    "total_pages": 46,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Progesterone&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Progesterone&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-18T11:35:01.925Z",
  "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": "NCT03558399",
      "title": "Frozen Blastocyst Transfer Using Conventional Timing Versus Timing by Endometrial Receptivity Analysis",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Implantation Failure",
        "Infertility, Female"
      ],
      "interventions": [
        {
          "name": "FET according to ERA",
          "type": "OTHER"
        },
        {
          "name": "FET according to standard protocol",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Shady Grove Fertility Reproductive Science Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "40 Years",
        "sex": "FEMALE",
        "summary": "30 Years to 40 Years · Female only"
      },
      "enrollment_count": 800,
      "start_date": "2018-04-25",
      "completion_date": "2021-09-23",
      "has_results": false,
      "last_update_posted_date": "2020-12-03",
      "last_synced_at": "2026-10-18T11:35:01.925Z",
      "location_count": 1,
      "location_summary": "Rockville, Maryland",
      "locations": [
        {
          "city": "Rockville",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03558399"
    },
    {
      "nct_id": "NCT00048646",
      "title": "Progesterone Treatment of Blunt Traumatic Brain Injury",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Traumatic Brain Injury"
      ],
      "interventions": [
        {
          "name": "IV Progesterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "David Wright",
      "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": "2002-05",
      "completion_date": "2005-09",
      "has_results": false,
      "last_update_posted_date": "2014-09-19",
      "last_synced_at": "2026-10-18T11:35:01.925Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00048646"
    },
    {
      "nct_id": "NCT03236545",
      "title": "Menopause Effects on Vascular Function",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Risk Factor"
      ],
      "interventions": [
        {
          "name": "No to Low Endogenous Estrogen",
          "type": "OTHER"
        },
        {
          "name": "Estradiol",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Delaware",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 65 Years · Female only"
      },
      "enrollment_count": 48,
      "start_date": "2016-07-01",
      "completion_date": "2022-11-01",
      "has_results": false,
      "last_update_posted_date": "2022-11-14",
      "last_synced_at": "2026-10-18T11:35:01.925Z",
      "location_count": 1,
      "location_summary": "Newark, Delaware",
      "locations": [
        {
          "city": "Newark",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03236545"
    },
    {
      "nct_id": "NCT00319566",
      "title": "Heart and Estrogen-Progestin Replacement Study (HERS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Coronary Heart Disease"
      ],
      "interventions": [
        {
          "name": "Premarin .625 mg daily plus medroxyprogesterone 2.5 mg daily",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": "75 Years",
        "sex": "FEMALE",
        "summary": "55 Years to 75 Years · Female only"
      },
      "enrollment_count": 2430,
      "start_date": "1992-07",
      "completion_date": "2001-07",
      "has_results": false,
      "last_update_posted_date": "2006-04-27",
      "last_synced_at": "2026-10-18T11:35:01.925Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00319566"
    },
    {
      "nct_id": "NCT00271206",
      "title": "Effect of Progesterone on Smoking Behavior in Male and Female Smokers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Tobacco Use Disorder"
      ],
      "interventions": [
        {
          "name": "Progesterone",
          "type": "DRUG"
        },
        {
          "name": "sugar pill",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Yale University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 65,
      "start_date": "2004-09",
      "completion_date": "2008-09",
      "has_results": false,
      "last_update_posted_date": "2020-04-02",
      "last_synced_at": "2026-10-18T11:35:01.925Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00271206"
    },
    {
      "nct_id": "NCT02255175",
      "title": "Perimenopausal Effects of Estradiol on Reward Responsiveness",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Perimenopausal Depression"
      ],
      "interventions": [
        {
          "name": "Estradiol",
          "type": "DRUG"
        },
        {
          "name": "Progesterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "44 Years",
        "maximum_age": "55 Years",
        "sex": "FEMALE",
        "summary": "44 Years to 55 Years · Female only"
      },
      "enrollment_count": 64,
      "start_date": "2015-10-01",
      "completion_date": "2018-10-17",
      "has_results": true,
      "last_update_posted_date": "2019-11-12",
      "last_synced_at": "2026-10-18T11:35:01.925Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02255175"
    },
    {
      "nct_id": "NCT00577122",
      "title": "Medroxyprogesterone +/- Cyclophosphamide & Methotrexate in Hormone Receptor-Negative Recurrent/Metastatic Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Estrogen Receptor-negative Breast Cancer",
        "Progesterone Receptor-negative Breast Cancer",
        "Recurrent Breast Cancer",
        "Stage IV Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Medroxyprogesterone progesterone acetate (MPA)",
          "type": "DRUG"
        },
        {
          "name": "Medroxyprogesterone with Cyclophosphamide + Methotrexate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2007-07",
      "completion_date": "2011-12",
      "has_results": true,
      "last_update_posted_date": "2023-10-16",
      "last_synced_at": "2026-10-18T11:35:01.925Z",
      "location_count": 7,
      "location_summary": "Birmingham, Alabama • San Francisco, California • Indianapolis, Indiana + 4 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00577122"
    },
    {
      "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": "2026-10-18T11:35:01.925Z",
      "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": "NCT06026553",
      "title": "Assessing Ketorolac (Toradol) at Oocyte Retrieval",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Infertility",
        "Infertility, Female",
        "Oocyte Retrieval",
        "Postoperative Pain",
        "Embryo Transfer"
      ],
      "interventions": [
        {
          "name": "Ketorolac (Toradol)",
          "type": "DRUG"
        },
        {
          "name": "Placebo (saline)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Shady Grove Fertility Reproductive Science Center",
      "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": 400,
      "start_date": "2022-08-10",
      "completion_date": "2025-01",
      "has_results": false,
      "last_update_posted_date": "2023-09-07",
      "last_synced_at": "2026-10-18T11:35:01.925Z",
      "location_count": 2,
      "location_summary": "Rockville, Maryland • Fairfax, Virginia",
      "locations": [
        {
          "city": "Rockville",
          "state": "Maryland"
        },
        {
          "city": "Fairfax",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06026553"
    },
    {
      "nct_id": "NCT00702702",
      "title": "Safety and Efficacy of Proellex in Pre-menopausal Anemic Women With Symptomatic Uterine Fibroids",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Uterine Fibroids",
        "Anemia"
      ],
      "interventions": [
        {
          "name": "Proellex 25 mg",
          "type": "DRUG"
        },
        {
          "name": "Proellex 50 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Repros Therapeutics Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 56,
      "start_date": "2008-06",
      "completion_date": "2009-08",
      "has_results": true,
      "last_update_posted_date": "2014-08-21",
      "last_synced_at": "2026-10-18T11:35:01.925Z",
      "location_count": 30,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Anaheim, California + 21 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00702702"
    }
  ]
}