{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Progesterone+vaginal+ring&page=2",
    "query": {
      "intervention": "Progesterone vaginal ring",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 32,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Progesterone+vaginal+ring&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Progesterone+vaginal+ring&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-01T18:34:58.874Z",
  "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": "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": "2026-10-01T18:34:58.874Z",
      "location_count": 1,
      "location_summary": "Norfolk, Virginia",
      "locations": [
        {
          "city": "Norfolk",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00117468"
    },
    {
      "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": "2026-10-01T18:34:58.874Z",
      "location_count": 1,
      "location_summary": "Stanford, California",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00946088"
    },
    {
      "nct_id": "NCT01546454",
      "title": "Relationship Between the Menstrual Cycle and Heart Disease in Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Coronary Heart Disease"
      ],
      "interventions": [
        {
          "name": "Ethinyl Estradiol-Levonorgestrel combination",
          "type": "DRUG"
        },
        {
          "name": "leuprolide acetate",
          "type": "DRUG"
        },
        {
          "name": "Estradiol",
          "type": "DRUG"
        },
        {
          "name": "Progesterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "40 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 40 Years · Female only"
      },
      "enrollment_count": 5,
      "start_date": "2012-02",
      "completion_date": "2013-01",
      "has_results": true,
      "last_update_posted_date": "2017-03-22",
      "last_synced_at": "2026-10-01T18:34:58.874Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01546454"
    },
    {
      "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": "2026-10-01T18:34:58.874Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02092571"
    },
    {
      "nct_id": "NCT03565211",
      "title": "Clinical Safety Study of the Progesterone Vaginal Ring in Women Undergoing Assisted Reproductive Technology Procedures",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Progesterone Supplementation in Women Undergoing ART"
      ],
      "interventions": [
        {
          "name": "Progesterone vaginal ring",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ferring Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "34 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 34 Years · Female only"
      },
      "enrollment_count": 352,
      "start_date": "2018-07-26",
      "completion_date": "2019-07-29",
      "has_results": true,
      "last_update_posted_date": "2020-11-23",
      "last_synced_at": "2026-10-01T18:34:58.874Z",
      "location_count": 15,
      "location_summary": "Tempe, Arizona • Encino, California • Newark, Delaware + 12 more",
      "locations": [
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Encino",
          "state": "California"
        },
        {
          "city": "Newark",
          "state": "Delaware"
        },
        {
          "city": "Clearwater",
          "state": "Florida"
        },
        {
          "city": "Winter Park",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03565211"
    },
    {
      "nct_id": "NCT01421368",
      "title": "Contraception and Menstrual Cycle Effect on Pharmacokinetics, Pharmacodynamics and Safety in Tenofovir Vaginal Gel Use",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV Prevention"
      ],
      "interventions": [
        {
          "name": "Tenofovir 1% vaginal gel",
          "type": "DRUG"
        },
        {
          "name": "Depo-medroxyprogesterone acetate (DMPA)",
          "type": "DRUG"
        },
        {
          "name": "Oral contraceptive: LNG 150 mcg and EE 30 mcg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "CONRAD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 72,
      "start_date": "2012-03",
      "completion_date": "2014-03",
      "has_results": false,
      "last_update_posted_date": "2015-04-10",
      "last_synced_at": "2026-10-01T18:34:58.874Z",
      "location_count": 2,
      "location_summary": "Pittsburgh, Pennsylvania • Norfolk, Virginia",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Norfolk",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01421368"
    },
    {
      "nct_id": "NCT00828191",
      "title": "Subcutaneous Progesterone Versus Vaginal Progesterone Tablets for Luteal Phase Support in In Vitro Fertilization (IVF)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "In Vitro Fertilization"
      ],
      "interventions": [
        {
          "name": "Progesterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "IBSA Institut Biochimique SA",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "42 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 42 Years · Female only"
      },
      "enrollment_count": 800,
      "start_date": "2008-12",
      "completion_date": "2012-02",
      "has_results": true,
      "last_update_posted_date": "2013-01-31",
      "last_synced_at": "2026-10-01T18:34:58.874Z",
      "location_count": 8,
      "location_summary": "Redondo Beach, California • San Jose, California • Stanford, California + 5 more",
      "locations": [
        {
          "city": "Redondo Beach",
          "state": "California"
        },
        {
          "city": "San Jose",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Thousand Oaks",
          "state": "California"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00828191"
    },
    {
      "nct_id": "NCT02133573",
      "title": "Randomized Trial of Maternal Progesterone Therapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Congenital Heart Disease",
        "Periventricular Leucomalacia",
        "Brain Development",
        "Cardiac Surgery",
        "Neurodevelopmental Disability",
        "Fetal Neuroprotection"
      ],
      "interventions": [
        {
          "name": "Progesterone",
          "type": "DRUG"
        },
        {
          "name": "Vaginal lubricant",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Children's Hospital of Philadelphia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 102,
      "start_date": "2014-07",
      "completion_date": "2021-11",
      "has_results": true,
      "last_update_posted_date": "2023-08-09",
      "last_synced_at": "2026-10-01T18:34:58.874Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02133573"
    },
    {
      "nct_id": "NCT00579553",
      "title": "Comparing IM vs. Vaginal Progesterone for Pre-term Birth",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Infant, Premature",
        "Premature Birth"
      ],
      "interventions": [
        {
          "name": "Intramuscular Progesterone",
          "type": "DRUG"
        },
        {
          "name": "Vaginal Progesterone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Oklahoma",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 174,
      "start_date": "2006-10",
      "completion_date": "2011-05",
      "has_results": true,
      "last_update_posted_date": "2021-05-19",
      "last_synced_at": "2026-10-01T18:34:58.874Z",
      "location_count": 1,
      "location_summary": "Oklahoma City, Oklahoma",
      "locations": [
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00579553"
    },
    {
      "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": "2026-10-01T18:34:58.874Z",
      "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"
    }
  ]
}