{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+Micronized+Progesterone+%2B+Placebo",
    "query": {
      "intervention": "Oral Micronized Progesterone + Placebo"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 27,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+Micronized+Progesterone+%2B+Placebo&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-28T02:21:54.482Z",
  "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": "NCT01809639",
      "title": "Does Oral Micronized Progesterone Shorten Time of Symptoms From Concussion",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Concussion"
      ],
      "interventions": [
        {
          "name": "Progesterone",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "44 Years",
        "sex": "ALL",
        "summary": "18 Years to 44 Years"
      },
      "enrollment_count": 25,
      "start_date": "2013-06",
      "completion_date": "2015-12",
      "has_results": true,
      "last_update_posted_date": "2018-08-28",
      "last_synced_at": "2026-09-28T02:21:54.482Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01809639"
    },
    {
      "nct_id": "NCT04112368",
      "title": "Cyclical Neuroactive Steroid Changes, Arousal, and Proximal Suicide Risk: An Experimental Approach",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Suicidal Ideation"
      ],
      "interventions": [
        {
          "name": "Estradiol Transdermal Patch 0.1 mg/24 hrs",
          "type": "DRUG"
        },
        {
          "name": "Oral Micronized Progesterone 200mg",
          "type": "DRUG"
        },
        {
          "name": "Inactive Clear Patch",
          "type": "DRUG"
        },
        {
          "name": "Placebo capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Illinois at Chicago",
      "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": 124,
      "start_date": "2020-09-15",
      "completion_date": "2024-08-01",
      "has_results": true,
      "last_update_posted_date": "2025-12-19",
      "last_synced_at": "2026-09-28T02:21:54.482Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04112368"
    },
    {
      "nct_id": "NCT00594217",
      "title": "Determining How Quickly Progesterone Slows LH Pulse Frequency",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Normal",
        "PCOS"
      ],
      "interventions": [
        {
          "name": "oral micronized progesterone suspension",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 35 Years · Female only"
      },
      "enrollment_count": 85,
      "start_date": "2007-11-29",
      "completion_date": "2020-01-18",
      "has_results": true,
      "last_update_posted_date": "2025-03-28",
      "last_synced_at": "2026-09-28T02:21:54.482Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00594217"
    },
    {
      "nct_id": "NCT01602679",
      "title": "Acute Effects of Progesterone on LH Pulses During the Follicular Phase (CRM006)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Female Reproductive Physiology"
      ],
      "interventions": [
        {
          "name": "oral micronized progesterone suspension",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 30 Years · Female only"
      },
      "enrollment_count": 12,
      "start_date": "2012-05",
      "completion_date": "2015-07-31",
      "has_results": true,
      "last_update_posted_date": "2018-10-16",
      "last_synced_at": "2026-09-28T02:21:54.482Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01602679"
    },
    {
      "nct_id": "NCT02272647",
      "title": "Progesterone Amplifies Estrogen-stimulated Growth Hormone Secretion in Older Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "IM Saline Placebo (0.25 ml)",
          "type": "DRUG"
        },
        {
          "name": "IM Estradiol valerate (2.5 mg)",
          "type": "DRUG"
        },
        {
          "name": "IM Saline Placebo (0.5 ml)",
          "type": "DRUG"
        },
        {
          "name": "IM Estradiol valerate (5.0 mg)",
          "type": "DRUG"
        },
        {
          "name": "Oral Micronized Progesterone",
          "type": "DRUG"
        },
        {
          "name": "Oral Placebo",
          "type": "DRUG"
        },
        {
          "name": "Ghrelin (0.3 ug/kg)",
          "type": "DRUG"
        },
        {
          "name": "Medroxyprogesterone - Acetate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "80 Years",
        "sex": "FEMALE",
        "summary": "50 Years to 80 Years · Female only"
      },
      "enrollment_count": 47,
      "start_date": "2014-12",
      "completion_date": "2018-02",
      "has_results": false,
      "last_update_posted_date": "2018-03-22",
      "last_synced_at": "2026-09-28T02:21:54.482Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02272647"
    },
    {
      "nct_id": "NCT03068910",
      "title": "Hyperandrogenemia and Altered Day-night LH Pulse Patterns",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Hyperandrogenism",
        "Polycystic Ovary Syndrome",
        "Puberty"
      ],
      "interventions": [
        {
          "name": "Micronized progesterone",
          "type": "DRUG"
        },
        {
          "name": "Spironolactone",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "17 Years",
        "sex": "FEMALE",
        "summary": "10 Years to 17 Years · Female only"
      },
      "enrollment_count": 32,
      "start_date": "2016-07-21",
      "completion_date": "2025-12-01",
      "has_results": false,
      "last_update_posted_date": "2025-08-05",
      "last_synced_at": "2026-09-28T02:21:54.482Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03068910"
    },
    {
      "nct_id": "NCT00946192",
      "title": "Fat Mediated Modulation of Reproductive and Endocrine Function in Young Athletes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Exercise-related Amenorrhea"
      ],
      "interventions": [
        {
          "name": "Transdermal 17Beta-estradiol, progesterone",
          "type": "DRUG"
        },
        {
          "name": "Ethinyl Estradiol + Desogestrel",
          "type": "DRUG"
        },
        {
          "name": "Sham Comparator",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "21 Years",
        "sex": "FEMALE",
        "summary": "14 Years to 21 Years · Female only"
      },
      "enrollment_count": 121,
      "start_date": "2009-05",
      "completion_date": "2021-04",
      "has_results": true,
      "last_update_posted_date": "2021-06-11",
      "last_synced_at": "2026-09-28T02:21:54.482Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00946192"
    },
    {
      "nct_id": "NCT01589081",
      "title": "Effects of Progesterone on IV Nicotine-Induced Changes in Hormones and Subjective Ratings of Stimulant Drug Effect",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Nicotine Dependence"
      ],
      "interventions": [
        {
          "name": "Intravenous Nicotine",
          "type": "DRUG"
        },
        {
          "name": "Progesterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mclean Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 40 Years · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2008-09",
      "completion_date": "2015-12-01",
      "has_results": false,
      "last_update_posted_date": "2024-01-17",
      "last_synced_at": "2026-09-28T02:21:54.482Z",
      "location_count": 1,
      "location_summary": "Belmont, Massachusetts",
      "locations": [
        {
          "city": "Belmont",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01589081"
    },
    {
      "nct_id": "NCT01428089",
      "title": "Suppression of Daytime and Nighttime Luteinizing Hormone Frequency by Progesterone",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Polycystic Ovary Syndrome",
        "Hyperandrogenism",
        "Normal Puberty"
      ],
      "interventions": [
        {
          "name": "Progesterone",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": "14 Years",
        "sex": "FEMALE",
        "summary": "7 Years to 14 Years · Female only"
      },
      "enrollment_count": 40,
      "start_date": "2011-03-11",
      "completion_date": "2024-12",
      "has_results": false,
      "last_update_posted_date": "2023-11-02",
      "last_synced_at": "2026-09-28T02:21:54.482Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01428089"
    },
    {
      "nct_id": "NCT04597099",
      "title": "Androgen Blockade and Progesterone Augmentation of Gonadotropin Secretion",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "PCOS",
        "Polycystic Ovary Syndrome"
      ],
      "interventions": [
        {
          "name": "Micronized progesterone",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Flutamide",
          "type": "DRUG"
        },
        {
          "name": "Estradiol patch",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 30 Years · Female only"
      },
      "enrollment_count": 10,
      "start_date": "2022-10-26",
      "completion_date": "2025-10-01",
      "has_results": false,
      "last_update_posted_date": "2023-11-02",
      "last_synced_at": "2026-09-28T02:21:54.482Z",
      "location_count": 1,
      "location_summary": "Charlottesville, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04597099"
    }
  ]
}