{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Breakthrough+Spotting",
    "query": {
      "condition": "Breakthrough Spotting"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-22T15:02:13.395Z",
  "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": "NCT00394771",
      "title": "A Study to Evaluate Bleeding Patterns With Three Different Doses of DR-1031 Compared to Seasonale",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breakthrough Bleeding"
      ],
      "interventions": [
        {
          "name": "DR-1031",
          "type": "DRUG"
        },
        {
          "name": "Seasonale®",
          "type": "DRUG"
        },
        {
          "name": "Portia®",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Duramed Research",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 567,
      "start_date": "2006-10",
      "completion_date": "2008-03",
      "has_results": true,
      "last_update_posted_date": "2013-07-26",
      "last_synced_at": "2026-07-22T15:02:13.395Z",
      "location_count": 50,
      "location_summary": "Huntsville, Alabama • Tucson, Arizona • Little Rock, Arkansas + 45 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00394771"
    },
    {
      "nct_id": "NCT00475553",
      "title": "Management of Breakthrough Bleeding During Extended Therapy Use With NuvaRing®",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breakthrough Bleeding",
        "Breakthrough Spotting"
      ],
      "interventions": [
        {
          "name": "remove ring if bleeding or spotting occurs more than 5 days",
          "type": "OTHER"
        },
        {
          "name": "If bleeding does not remove ring",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Scott and White Hospital & Clinic",
      "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": 75,
      "start_date": "2006-05",
      "completion_date": "2008-05",
      "has_results": false,
      "last_update_posted_date": "2009-12-18",
      "last_synced_at": "2026-07-22T15:02:13.395Z",
      "location_count": 1,
      "location_summary": "Temple, Texas",
      "locations": [
        {
          "city": "Temple",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00475553"
    },
    {
      "nct_id": "NCT00120913",
      "title": "Continuous Oral Contraceptives (COCs): Are Bleeding Patterns Dependent on the Hormones Given?",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breakthrough Bleeding"
      ],
      "interventions": [
        {
          "name": "Birth control pills",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 49 Years · Female only"
      },
      "enrollment_count": 160,
      "start_date": null,
      "completion_date": "2004-08",
      "has_results": false,
      "last_update_posted_date": "2005-07-19",
      "last_synced_at": "2026-07-22T15:02:13.395Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00120913"
    },
    {
      "nct_id": "NCT04205929",
      "title": "Use of Curcumin to Treat Unfavorable Bleeding Patterns in Contraceptive Implant Users",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Bleeding",
        "Implants",
        "Breakthrough Bleeding"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Curcumin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "15 Years to 45 Years · Female only"
      },
      "enrollment_count": 58,
      "start_date": "2020-04-15",
      "completion_date": "2023-08-01",
      "has_results": true,
      "last_update_posted_date": "2024-07-03",
      "last_synced_at": "2026-07-22T15:02:13.395Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04205929"
    },
    {
      "nct_id": "NCT01469585",
      "title": "Oral Contraceptives and Subantimicrobial Doxycycline: Effect on Endometrial Matrix Metalloproteinases",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breakthrough Bleeding"
      ],
      "interventions": [
        {
          "name": "Doxycycline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Hawaii",
      "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": 20,
      "start_date": "2011-11",
      "completion_date": "2012-05",
      "has_results": true,
      "last_update_posted_date": "2020-12-17",
      "last_synced_at": "2026-07-22T15:02:13.395Z",
      "location_count": 1,
      "location_summary": "Honolulu, Hawaii",
      "locations": [
        {
          "city": "Honolulu",
          "state": "Hawaii"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01469585"
    },
    {
      "nct_id": "NCT02824224",
      "title": "Tamoxifen to Reduce Unscheduled Bleeding in New Users of the Levonorgestrel-releasing Intrauterine System (LNG-IUS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Menorrhagia",
        "Metrorrhagia",
        "Medicated Intrauterine Devices"
      ],
      "interventions": [
        {
          "name": "Tamoxifen",
          "type": "DRUG"
        },
        {
          "name": "Placebo (for Tamoxifen)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "15 Years to 45 Years · Female only"
      },
      "enrollment_count": 42,
      "start_date": "2016-09-06",
      "completion_date": "2018-01-08",
      "has_results": true,
      "last_update_posted_date": "2019-06-04",
      "last_synced_at": "2026-07-22T15:02:13.395Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02824224"
    },
    {
      "nct_id": "NCT02903121",
      "title": "Treatment of Unfavorable Bleeding Patterns in Contraceptive Implant Users",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Bleeding",
        "Implants",
        "Breakthrough Bleeding"
      ],
      "interventions": [
        {
          "name": "Tamoxifen",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Tamoxifen (open label)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "15 Years to 45 Years · Female only"
      },
      "enrollment_count": 109,
      "start_date": "2017-01-20",
      "completion_date": "2019-06-05",
      "has_results": true,
      "last_update_posted_date": "2020-07-15",
      "last_synced_at": "2026-07-22T15:02:13.395Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02903121"
    },
    {
      "nct_id": "NCT01251263",
      "title": "Prevention of Menstrual Migraines: Effects of Estrogen Add-back During the HFI in Patients Using Continuous Oral Contraceptives.",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Menstrual Migraines",
        "Menstrual Bleeding",
        "Menstrual Spotting"
      ],
      "interventions": [
        {
          "name": "Estradiol or Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Scott and White Hospital & Clinic",
      "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": 40,
      "start_date": "2010-10",
      "completion_date": "2012-10",
      "has_results": false,
      "last_update_posted_date": "2010-12-01",
      "last_synced_at": "2026-07-22T15:02:13.395Z",
      "location_count": 1,
      "location_summary": "Temple, Texas",
      "locations": [
        {
          "city": "Temple",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01251263"
    },
    {
      "nct_id": "NCT04676061",
      "title": "Effects of a Progestin on Frequent and/or Prolonged Bleeding With Nexplanon™",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Birth Control",
        "Contraception",
        "Implant",
        "Breakthrough Bleeding",
        "Uterine Bleeding"
      ],
      "interventions": [
        {
          "name": "Norethindrone acetate (NTA)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Baylor Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "48 Years",
        "sex": "FEMALE",
        "summary": "14 Years to 48 Years · Female only"
      },
      "enrollment_count": 51,
      "start_date": "2021-02-11",
      "completion_date": "2023-03-10",
      "has_results": false,
      "last_update_posted_date": "2024-02-02",
      "last_synced_at": "2026-07-22T15:02:13.395Z",
      "location_count": 1,
      "location_summary": "Temple, Texas",
      "locations": [
        {
          "city": "Temple",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04676061"
    },
    {
      "nct_id": "NCT00700128",
      "title": "Prevention of Menstrual Migraines: Using Frovatriptan or Placebo During Hormone Free Intervals",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Migraines",
        "Bleeding",
        "Spotting"
      ],
      "interventions": [
        {
          "name": "frovatriptan",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Scott and White Hospital & Clinic",
      "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": 30,
      "start_date": "2008-06",
      "completion_date": "2010-01",
      "has_results": false,
      "last_update_posted_date": "2011-07-25",
      "last_synced_at": "2026-07-22T15:02:13.395Z",
      "location_count": 1,
      "location_summary": "Temple, Texas",
      "locations": [
        {
          "city": "Temple",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00700128"
    }
  ]
}