{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Progesterone+vaginal+ring",
    "query": {
      "intervention": "Progesterone vaginal ring"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 32,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Progesterone+vaginal+ring&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-10T11:37:14.512Z",
  "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": "NCT04753957",
      "title": "Pharmacokinetics of Progesterone in Pregnancy-2",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Pregnancy Related"
      ],
      "interventions": [
        {
          "name": "micronized Progesterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Thomas Jefferson University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "55 Years",
        "sex": "FEMALE",
        "summary": "16 Years to 55 Years · Female only"
      },
      "enrollment_count": 3,
      "start_date": "2022-01-07",
      "completion_date": "2022-02-01",
      "has_results": false,
      "last_update_posted_date": "2022-05-26",
      "last_synced_at": "2026-09-10T11:37:14.512Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04753957"
    },
    {
      "nct_id": "NCT00615251",
      "title": "A Clinical Trial to Evaluate the Efficacy and Safety of DR-2011 for In Vitro Fertilization",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Infertility"
      ],
      "interventions": [
        {
          "name": "DR-2011",
          "type": "DRUG"
        },
        {
          "name": "Crinone 8%",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Duramed Research",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "42 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 42 Years · Female only"
      },
      "enrollment_count": 1297,
      "start_date": "2008-02",
      "completion_date": "2009-08",
      "has_results": false,
      "last_update_posted_date": "2013-09-13",
      "last_synced_at": "2026-09-10T11:37:14.512Z",
      "location_count": 29,
      "location_summary": "Tarzana, California • West Los Angeles, California • Westlake, California + 26 more",
      "locations": [
        {
          "city": "Tarzana",
          "state": "California"
        },
        {
          "city": "West Los Angeles",
          "state": "California"
        },
        {
          "city": "Westlake",
          "state": "California"
        },
        {
          "city": "Clearwater",
          "state": "Florida"
        },
        {
          "city": "Alpharetta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00615251"
    },
    {
      "nct_id": "NCT02254577",
      "title": "Vaginal Compared to Intramuscular Progesterone for Frozen Embryo Transfer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Infertility"
      ],
      "interventions": [
        {
          "name": "Endometrin® plus Progesterone in Oil (PIO)",
          "type": "DRUG"
        },
        {
          "name": "Progesterone in Oil (PIO) Only",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Shady Grove Fertility Reproductive Science Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "48 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 48 Years · Female only"
      },
      "enrollment_count": 1139,
      "start_date": "2014-10",
      "completion_date": "2018-04-27",
      "has_results": false,
      "last_update_posted_date": "2018-08-02",
      "last_synced_at": "2026-09-10T11:37:14.512Z",
      "location_count": 14,
      "location_summary": "Washington D.C., District of Columbia • Annapolis, Maryland • Baltimore, Maryland + 10 more",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Annapolis",
          "state": "Maryland"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Bel Air",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02254577"
    },
    {
      "nct_id": "NCT01465373",
      "title": "Vaginal Progesterone Versus Progesterone in Oil in Donor Egg Recipient In Vitro Fertilization Cycles Utilizing Vitrified Donor Eggs",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Infertility"
      ],
      "interventions": [
        {
          "name": "Endometrin",
          "type": "DRUG"
        },
        {
          "name": "Progesterone in Oil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Fertility Centers of Illinois",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "49 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 49 Years · Female only"
      },
      "enrollment_count": 10,
      "start_date": "2010-02",
      "completion_date": "2011-09",
      "has_results": false,
      "last_update_posted_date": "2011-11-04",
      "last_synced_at": "2026-09-10T11:37:14.512Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01465373"
    },
    {
      "nct_id": "NCT02620904",
      "title": "Mifepristone Induction for Fetal Demise",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Intrauterine Fetal Demise",
        "Fetal Death"
      ],
      "interventions": [
        {
          "name": "Mifepristone",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Montefiore Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "16 Years and older · Female only"
      },
      "enrollment_count": 9,
      "start_date": "2016-07-14",
      "completion_date": "2020-01",
      "has_results": true,
      "last_update_posted_date": "2021-02-18",
      "last_synced_at": "2026-09-10T11:37:14.512Z",
      "location_count": 1,
      "location_summary": "The Bronx, New York",
      "locations": [
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02620904"
    },
    {
      "nct_id": "NCT00946088",
      "title": "Progesterone for Maintenance Tocolysis: A Randomized Placebo Controlled Trial",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Pregnancy Complications"
      ],
      "interventions": [
        {
          "name": "Progesterone",
          "type": "DRUG"
        },
        {
          "name": "Polyethylene glycol&hydrogenated vegetable oil.",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 55 Years · Female only"
      },
      "enrollment_count": 7,
      "start_date": "2009-10",
      "completion_date": "2015-03",
      "has_results": true,
      "last_update_posted_date": "2017-03-16",
      "last_synced_at": "2026-09-10T11:37:14.512Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00946088"
    },
    {
      "nct_id": "NCT02357394",
      "title": "Cervical Pessary to Prevent Preterm Birth in Singleton Pregnancies With a Sonographically Measured Short Cervix",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Premature Birth"
      ],
      "interventions": [
        {
          "name": "Arabin Pessary",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "Gene Lee, MD",
      "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": 7,
      "start_date": "2015-05",
      "completion_date": "2019-04-01",
      "has_results": true,
      "last_update_posted_date": "2019-10-31",
      "last_synced_at": "2026-09-10T11:37:14.512Z",
      "location_count": 2,
      "location_summary": "Kansas City, Kansas • Charleston, South Carolina",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "Charleston",
          "state": "South Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02357394"
    },
    {
      "nct_id": "NCT00117468",
      "title": "Comparison of DR-2011 to a Progesterone Vaginal Gel for Luteal Phase Replacement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Infertility"
      ],
      "interventions": [
        {
          "name": "DR-2011",
          "type": "DRUG"
        },
        {
          "name": "Progesterone 8% Vaginal Gel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "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": 20,
      "start_date": "2005-06",
      "completion_date": "2006-04",
      "has_results": false,
      "last_update_posted_date": "2014-05-12",
      "last_synced_at": "2026-09-10T11:37:14.512Z",
      "location_count": 1,
      "location_summary": "Norfolk, Virginia",
      "locations": [
        {
          "city": "Norfolk",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00117468"
    },
    {
      "nct_id": "NCT02092571",
      "title": "A Pharmacokinetic Study to Evaluate the Bioequivalence of 2 Progesterone Vaginal Rings in Postmenopausal Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Pharmacokinetics"
      ],
      "interventions": [
        {
          "name": "Progesterone vaginal ring,",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Teva Branded Pharmaceutical Products R&D, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "70 Years",
        "sex": "FEMALE",
        "summary": "40 Years to 70 Years · Female only"
      },
      "enrollment_count": 56,
      "start_date": "2014-02",
      "completion_date": "2014-08",
      "has_results": false,
      "last_update_posted_date": "2021-11-09",
      "last_synced_at": "2026-09-10T11:37:14.512Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02092571"
    },
    {
      "nct_id": "NCT06851754",
      "title": "Hormone Replacement Therapy in Adolescents With Premature Ovarian Insufficiency",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Premature Ovarian Insufficiency"
      ],
      "interventions": [
        {
          "name": "Progesterone",
          "type": "DRUG"
        },
        {
          "name": "Estrogen Patch",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "11 Years",
        "maximum_age": "19 Years",
        "sex": "FEMALE",
        "summary": "11 Years to 19 Years · Female only"
      },
      "enrollment_count": 185,
      "start_date": "2025-07-17",
      "completion_date": "2031-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-05",
      "last_synced_at": "2026-09-10T11:37:14.512Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06851754"
    }
  ]
}