{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Doxycycline+Placebo",
    "query": {
      "intervention": "Doxycycline Placebo"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 62,
    "total_pages": 7,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Doxycycline+Placebo&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-08T20:54:39.438Z",
  "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": "NCT01917721",
      "title": "Doxycycline Treatment to Prevent Progressive Coronary Artery Dilation in Children With Kawasaki Disease",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Kawasaki Disease",
        "Coronary Aneurysm"
      ],
      "interventions": [
        {
          "name": "Doxycycline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hawaii Pacific Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Month",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "1 Month to 21 Years"
      },
      "enrollment_count": 26,
      "start_date": "2013-10",
      "completion_date": "2026-08",
      "has_results": true,
      "last_update_posted_date": "2026-06-03",
      "last_synced_at": "2026-09-08T20:54:39.438Z",
      "location_count": 1,
      "location_summary": "Honolulu, Hawaii",
      "locations": [
        {
          "city": "Honolulu",
          "state": "Hawaii"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01917721"
    },
    {
      "nct_id": "NCT01594827",
      "title": "Persistent Methicillin Resistant Staphylococcus Aureus Eradication Protocol (PMEP)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cystic Fibrosis"
      ],
      "interventions": [
        {
          "name": "Inhaled Vancomycin",
          "type": "DRUG"
        },
        {
          "name": "Placebo (Sterile Water)",
          "type": "DRUG"
        },
        {
          "name": "Rifampin",
          "type": "DRUG"
        },
        {
          "name": "Trimethoprim/Sulfamethoxazole (TMP/SMX)",
          "type": "DRUG"
        },
        {
          "name": "Doxycycline",
          "type": "DRUG"
        },
        {
          "name": "Mupirocin Intranasal Creme",
          "type": "DRUG"
        },
        {
          "name": "4% chlorhexidine gluconate liquid skin cleanser",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 29,
      "start_date": "2012-10",
      "completion_date": "2017-12-30",
      "has_results": true,
      "last_update_posted_date": "2019-02-26",
      "last_synced_at": "2026-09-08T20:54:39.438Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland • Cleveland, Ohio",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01594827"
    },
    {
      "nct_id": "NCT02753426",
      "title": "A Trial of Doxycycline in Renal Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Chronic Kidney Disease",
        "Cardiorenal Syndrome"
      ],
      "interventions": [
        {
          "name": "Doxycycline",
          "type": "DRUG"
        },
        {
          "name": "Placebo (for Doxycycline)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 11,
      "start_date": "2016-04",
      "completion_date": "2018-01",
      "has_results": false,
      "last_update_posted_date": "2020-02-06",
      "last_synced_at": "2026-09-08T20:54:39.438Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02753426"
    },
    {
      "nct_id": "NCT05840159",
      "title": "A Study of Doxycycline to Treat Chlamydial Infection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Chlamydial Infection"
      ],
      "interventions": [
        {
          "name": "Doxycycline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 526,
      "start_date": "2024-01-19",
      "completion_date": "2026-02-12",
      "has_results": false,
      "last_update_posted_date": "2026-03-27",
      "last_synced_at": "2026-09-08T20:54:39.438Z",
      "location_count": 5,
      "location_summary": "Birmingham, Alabama • Atlanta, Georgia • Rochester, New York + 1 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Rochester",
          "state": "New York"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05840159"
    },
    {
      "nct_id": "NCT04729140",
      "title": "An Outpatient Clinical Trial Using Ivermectin and Doxycycline in COVID-19 Positive Patients at High Risk to Prevent COVID-19 Related Hospitalization",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Covid19"
      ],
      "interventions": [
        {
          "name": "Ivermectin Tablets",
          "type": "DRUG"
        },
        {
          "name": "Doxycycline Tablets",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Max Health, Subsero Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 150,
      "start_date": "2020-12-28",
      "completion_date": "2022-03-28",
      "has_results": false,
      "last_update_posted_date": "2021-04-01",
      "last_synced_at": "2026-09-08T20:54:39.438Z",
      "location_count": 1,
      "location_summary": "Sarasota, Florida",
      "locations": [
        {
          "city": "Sarasota",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04729140"
    },
    {
      "nct_id": "NCT02456662",
      "title": "Scheduled Prophylactic Antiemetics for Reduction of Emesis With Doxycycline (SPARED) Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Drug-induced Nausea and Vomiting"
      ],
      "interventions": [
        {
          "name": "Ondansetron",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Rochester",
      "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": 319,
      "start_date": "2015-10-07",
      "completion_date": "2019-04-03",
      "has_results": true,
      "last_update_posted_date": "2020-04-16",
      "last_synced_at": "2026-09-08T20:54:39.438Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02456662"
    },
    {
      "nct_id": "NCT00000403",
      "title": "Doxycycline and OA Progression",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "Doxycycline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "64 Years",
        "sex": "FEMALE",
        "summary": "45 Years to 64 Years · Female only"
      },
      "enrollment_count": 432,
      "start_date": "1996-09",
      "completion_date": "2001-07",
      "has_results": false,
      "last_update_posted_date": "2013-04-30",
      "last_synced_at": "2026-09-08T20:54:39.438Z",
      "location_count": 6,
      "location_summary": "Birmingham, Alabama • Tucson, Arizona • Chicago, Illinois + 3 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Wichita",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00000403"
    },
    {
      "nct_id": "NCT04451330",
      "title": "A Study to Compare Efficacy and Safety of Trifarotene Cream When Used With an Oral Antibiotic for the Treatment of Severe Acne Vulgaris (AV)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acne Vulgaris"
      ],
      "interventions": [
        {
          "name": "Trifarotene cream",
          "type": "DRUG"
        },
        {
          "name": "Doxycycline hyclate",
          "type": "DRUG"
        },
        {
          "name": "Trifarotene Vehicle",
          "type": "DRUG"
        },
        {
          "name": "Doxycycline Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Galderma R&D",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 202,
      "start_date": "2020-07-29",
      "completion_date": "2021-04-26",
      "has_results": true,
      "last_update_posted_date": "2022-05-10",
      "last_synced_at": "2026-09-08T20:54:39.438Z",
      "location_count": 25,
      "location_summary": "Fort Smith, Arkansas • Hot Springs, Arkansas • Rogers, Arkansas + 21 more",
      "locations": [
        {
          "city": "Fort Smith",
          "state": "Arkansas"
        },
        {
          "city": "Hot Springs",
          "state": "Arkansas"
        },
        {
          "city": "Rogers",
          "state": "Arkansas"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "Aventura",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04451330"
    },
    {
      "nct_id": "NCT04150250",
      "title": "Cholera Anti-Secretory Treatment Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cholera"
      ],
      "interventions": [
        {
          "name": "iOWH032",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "V. cholerae Challenge",
          "type": "OTHER"
        },
        {
          "name": "Antibiotics",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "PATH",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "44 Years",
        "sex": "ALL",
        "summary": "18 Years to 44 Years"
      },
      "enrollment_count": 47,
      "start_date": "2019-11-04",
      "completion_date": "2020-07-27",
      "has_results": true,
      "last_update_posted_date": "2021-03-25",
      "last_synced_at": "2026-09-08T20:54:39.438Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04150250"
    },
    {
      "nct_id": "NCT01631617",
      "title": "Effects of Treatments on Atopic Dermatitis",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Eczema",
        "Dermatitis",
        "Skin Diseases, Genetic",
        "Dermatitis, Atopic",
        "Skin Diseases"
      ],
      "interventions": [
        {
          "name": "Trimethoprim/sulfamethoxazole (TMP/SMZ)",
          "type": "DRUG"
        },
        {
          "name": "Cephalexin",
          "type": "DRUG"
        },
        {
          "name": "Doxycycline",
          "type": "DRUG"
        },
        {
          "name": "Sodium hypochlorite",
          "type": "OTHER"
        },
        {
          "name": "Placebo capsules",
          "type": "OTHER"
        },
        {
          "name": "Placebo Sodium hypochlorite",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "2 Years to 50 Years"
      },
      "enrollment_count": 130,
      "start_date": "2012-09-18",
      "completion_date": "2027-01-01",
      "has_results": false,
      "last_update_posted_date": "2026-08-28",
      "last_synced_at": "2026-09-08T20:54:39.438Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01631617"
    }
  ]
}