{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+doxycycline+hyclate&page=4",
    "query": {
      "intervention": "Oral doxycycline hyclate",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 82,
    "total_pages": 9,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+doxycycline+hyclate&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+doxycycline+hyclate&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-11T12:29:17.189Z",
  "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": "NCT01301586",
      "title": "A Novel Combination Oral Agent to Treat Acne Vulgaris",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "ACNE VULGARIS"
      ],
      "interventions": [
        {
          "name": "Doxycycline and S-equol",
          "type": "DRUG"
        },
        {
          "name": "Doxycycline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Nexgen Dermatologics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "13 Years to 60 Years · Female only"
      },
      "enrollment_count": 60,
      "start_date": "2010-11",
      "completion_date": "2011-09",
      "has_results": false,
      "last_update_posted_date": "2011-02-23",
      "last_synced_at": "2026-10-11T12:29:17.189Z",
      "location_count": 2,
      "location_summary": "Rolling Hills Estates, California • Boynton Beach, Florida",
      "locations": [
        {
          "city": "Rolling Hills Estates",
          "state": "California"
        },
        {
          "city": "Boynton Beach",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01301586"
    },
    {
      "nct_id": "NCT01426269",
      "title": "Evaluation of Relapse, Efficacy and Safety of Long-term Treatment With Oracea® vs Placebo",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Rosacea"
      ],
      "interventions": [
        {
          "name": "Doxycycline",
          "type": "DRUG"
        },
        {
          "name": "Metronidazole",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Galderma R&D",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 235,
      "start_date": "2011-09",
      "completion_date": "2013-06",
      "has_results": true,
      "last_update_posted_date": "2022-08-01",
      "last_synced_at": "2026-10-11T12:29:17.189Z",
      "location_count": 11,
      "location_summary": "Santa Monica, California • Coral Gables, Florida • Corbin, Kentucky + 8 more",
      "locations": [
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Coral Gables",
          "state": "Florida"
        },
        {
          "city": "Corbin",
          "state": "Kentucky"
        },
        {
          "city": "Louisville",
          "state": "Kentucky"
        },
        {
          "city": "Richmond",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01426269"
    },
    {
      "nct_id": "NCT04860505",
      "title": "Combo-PEP: Multipurpose Prevention of Post-Exposure Prophylaxis Regimens",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Sexually Transmitted Diseases"
      ],
      "interventions": [
        {
          "name": "Doxycycline",
          "type": "DRUG"
        },
        {
          "name": "Biktarvy",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "59 Years",
        "sex": "ALL",
        "summary": "18 Years to 59 Years"
      },
      "enrollment_count": 20,
      "start_date": "2021-05-20",
      "completion_date": "2022-05-09",
      "has_results": true,
      "last_update_posted_date": "2023-05-23",
      "last_synced_at": "2026-10-11T12:29:17.189Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04860505"
    },
    {
      "nct_id": "NCT00688064",
      "title": "Adapalene-BPO Gel Associated With Doxycycline Hyclate 100 mg in the Treatment of Severe Acne Vulgaris",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Severe Acne Vulgaris"
      ],
      "interventions": [
        {
          "name": "Adapalene BPO Gel associated with Doxycyline Hyclate",
          "type": "DRUG"
        },
        {
          "name": "Vehicle Gel associated with Doxycycline Hyclate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Galderma R&D",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "12 Years to 35 Years"
      },
      "enrollment_count": 459,
      "start_date": "2008-08",
      "completion_date": "2009-02",
      "has_results": true,
      "last_update_posted_date": "2021-02-18",
      "last_synced_at": "2026-10-11T12:29:17.189Z",
      "location_count": 28,
      "location_summary": "Oceanside, California • San Diego, California • Denver, Colorado + 25 more",
      "locations": [
        {
          "city": "Oceanside",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Longmont",
          "state": "Colorado"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00688064"
    },
    {
      "nct_id": "NCT06738407",
      "title": "Doxycycline Prophylaxis for Prevention of Sexually Transmitted Infections",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Gonorrhea",
        "Chlamydia",
        "Syphilis",
        "Sexually Transmitted Infections (STIs)"
      ],
      "interventions": [
        {
          "name": "Doxycycline hyclate delayed released 200 mg",
          "type": "DRUG"
        },
        {
          "name": "Doxycycline hyclate delayed released 200 mg weekly",
          "type": "DRUG"
        },
        {
          "name": "Per standard of care with quarterly STI testing/treatment and sexual health counseling",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Westat",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "29 Years",
        "sex": "FEMALE",
        "summary": "13 Years to 29 Years · Female only"
      },
      "enrollment_count": 760,
      "start_date": "2026-02-27",
      "completion_date": "2029-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-10-09",
      "last_synced_at": "2026-10-11T12:29:17.189Z",
      "location_count": 13,
      "location_summary": "Los Angeles, California • San Francisco, California • Washington D.C., District of Columbia + 10 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06738407"
    },
    {
      "nct_id": "NCT05343455",
      "title": "A Study to Assess the Safety, Efficacy and Tolerability of Oral DFD-29 Capsules for the Treatment of Rosacea (MVOR-2)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Papulopustular Rosacea"
      ],
      "interventions": [
        {
          "name": "DFD-29",
          "type": "DRUG"
        },
        {
          "name": "Doxycycline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Journey Medical Corporation",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 330,
      "start_date": "2022-03-29",
      "completion_date": "2023-06-30",
      "has_results": true,
      "last_update_posted_date": "2024-12-03",
      "last_synced_at": "2026-10-11T12:29:17.189Z",
      "location_count": 15,
      "location_summary": "Santa Monica, California • Doral, Florida • Miami, Florida + 11 more",
      "locations": [
        {
          "city": "Santa Monica",
          "state": "California"
        },
        {
          "city": "Doral",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miramar",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05343455"
    },
    {
      "nct_id": "NCT04504123",
      "title": "MMP-9 Inhibition for Recalcitrant Wet AMD",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Exudative Macular Degeneration",
        "Wet Age-related Macular Degeneration"
      ],
      "interventions": [
        {
          "name": "Doxycycline Hyclate",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Iowa",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "50 Years to 99 Years"
      },
      "enrollment_count": 50,
      "start_date": "2020-11-04",
      "completion_date": "2027-03-01",
      "has_results": false,
      "last_update_posted_date": "2026-04-02",
      "last_synced_at": "2026-10-11T12:29:17.189Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04504123"
    },
    {
      "nct_id": "NCT01855360",
      "title": "Doxycycline and TUDCA in Patients With Transthyretin Amyloid Cardiomyopathy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Amyloidosis; Heart (Manifestation)",
        "Senile Cardiac Amyloidosis"
      ],
      "interventions": [
        {
          "name": "Tauroursodeoxycholic Acid and Doxycycline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 40,
      "start_date": "2013-06",
      "completion_date": "2015-05-31",
      "has_results": true,
      "last_update_posted_date": "2020-12-04",
      "last_synced_at": "2026-10-11T12:29:17.189Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01855360"
    },
    {
      "nct_id": "NCT03076281",
      "title": "Metformin Hydrochloride and Doxycycline in Treating Patients With Head and Neck Squamous Cell Carcinoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Larynx",
        "LIP",
        "Oral Cavity",
        "Pharynx"
      ],
      "interventions": [
        {
          "name": "Metformin Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Doxycycline",
          "type": "DRUG"
        },
        {
          "name": "Metformin +Doxycycline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sidney Kimmel Comprehensive Cancer Center at Thomas Jefferson University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 7,
      "start_date": "2017-04-03",
      "completion_date": "2018-12-03",
      "has_results": true,
      "last_update_posted_date": "2026-01-29",
      "last_synced_at": "2026-10-11T12:29:17.189Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03076281"
    },
    {
      "nct_id": "NCT04723940",
      "title": "Or v IV Antibiotics for Infection",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Joint Infection"
      ],
      "interventions": [
        {
          "name": "Bactrim",
          "type": "DRUG"
        },
        {
          "name": "Cefadroxil",
          "type": "DRUG"
        },
        {
          "name": "Doxycycline Hcl",
          "type": "DRUG"
        },
        {
          "name": "Clindamycin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rothman Institute Orthopaedics",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 308,
      "start_date": "2021-01-25",
      "completion_date": "2028-01-25",
      "has_results": false,
      "last_update_posted_date": "2026-10-08",
      "last_synced_at": "2026-10-11T12:29:17.189Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04723940"
    }
  ]
}