{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Doxycycline+Placebo&page=2",
    "query": {
      "intervention": "Doxycycline Placebo",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 62,
    "total_pages": 7,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Doxycycline+Placebo&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Doxycycline+Placebo&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-01T08:51:05.259Z",
  "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": "NCT00007735",
      "title": "Antibiotic Treatment of Gulf War Veterans' Illnesses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Persian Gulf Syndrome",
        "Mycoplasma Infections"
      ],
      "interventions": [
        {
          "name": "Doxycycline (200mg/day) or Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "US Department of Veterans Affairs",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 450,
      "start_date": "1999-01",
      "completion_date": "2001-10",
      "has_results": false,
      "last_update_posted_date": "2023-10-30",
      "last_synced_at": "2026-10-01T08:51:05.259Z",
      "location_count": 26,
      "location_summary": "Birmingham, Alabama • San Diego, California • Washington D.C., District of Columbia + 23 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Augusta",
          "state": "Georgia"
        },
        {
          "city": "Hines",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00007735"
    },
    {
      "nct_id": "NCT04167085",
      "title": "NOrth American Study for the Treatment of Recurrent epIstaxis With DoxycycLine: The NOSTRIL Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Epistaxis"
      ],
      "interventions": [
        {
          "name": "Doxycycline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 26,
      "start_date": "2017-12-18",
      "completion_date": "2021-06-01",
      "has_results": true,
      "last_update_posted_date": "2022-07-20",
      "last_synced_at": "2026-10-01T08:51:05.259Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04167085"
    },
    {
      "nct_id": "NCT01308619",
      "title": "Evaluation of Rosacea-related Inflammatory Biochemical Markers in Adult Skin When Treated With Oracea® vs Placebo",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Rosacea"
      ],
      "interventions": [
        {
          "name": "Doxycycline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Galderma R&D",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 170,
      "start_date": "2011-04",
      "completion_date": "2012-08",
      "has_results": true,
      "last_update_posted_date": "2022-08-01",
      "last_synced_at": "2026-10-01T08:51:05.259Z",
      "location_count": 10,
      "location_summary": "Hot Springs, Arkansas • San Diego, California • Evansville, Indiana + 7 more",
      "locations": [
        {
          "city": "Hot Springs",
          "state": "Arkansas"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Evansville",
          "state": "Indiana"
        },
        {
          "city": "Plainfield",
          "state": "Indiana"
        },
        {
          "city": "Clinton Township",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01308619"
    },
    {
      "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": "2026-10-01T08:51:05.259Z",
      "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": "NCT00764361",
      "title": "Safety Study of Topical Doxycycline Gel for Adult Diabetic Lower Extremity Ulcers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Diabetic Foot Ulcer"
      ],
      "interventions": [
        {
          "name": "doxycycline",
          "type": "DRUG"
        },
        {
          "name": "placebo gel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "NanoSHIFT LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2009-01",
      "completion_date": "2010-08",
      "has_results": true,
      "last_update_posted_date": "2017-04-07",
      "last_synced_at": "2026-10-01T08:51:05.259Z",
      "location_count": 1,
      "location_summary": "Gainesville, Florida",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00764361"
    },
    {
      "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": "2026-10-01T08:51:05.259Z",
      "location_count": 1,
      "location_summary": "Rochester, New York",
      "locations": [
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02456662"
    },
    {
      "nct_id": "NCT00016835",
      "title": "Treating Periodontal Infection: Effects on Glycemic",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Periodontal Disease",
        "Diabetes Mellitus, Type 2"
      ],
      "interventions": [
        {
          "name": "Supra-gingival scaling and placebo",
          "type": "PROCEDURE"
        },
        {
          "name": "Subgingival scaling and metronidazole",
          "type": "PROCEDURE"
        },
        {
          "name": "Subgingival scaling and doxycycline",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 46,
      "start_date": "2001-10-17",
      "completion_date": "2004-09-03",
      "has_results": false,
      "last_update_posted_date": "2017-07-19",
      "last_synced_at": "2026-10-01T08:51:05.259Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00016835"
    },
    {
      "nct_id": "NCT03608774",
      "title": "Trial of Azithromycin vs. Doxycycline for the Treatment of Rectal Chlamydia in MSM",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Anal Chlamydia Infection"
      ],
      "interventions": [
        {
          "name": "Azithromycin",
          "type": "DRUG"
        },
        {
          "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": "18 Years",
        "maximum_age": "99 Years",
        "sex": "MALE",
        "summary": "18 Years to 99 Years · Male only"
      },
      "enrollment_count": 177,
      "start_date": "2018-07-13",
      "completion_date": "2020-02-21",
      "has_results": true,
      "last_update_posted_date": "2021-01-07",
      "last_synced_at": "2026-10-01T08:51:05.259Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts • Seattle, Washington",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03608774"
    },
    {
      "nct_id": "NCT01014260",
      "title": "Doxycycline Outcomes in Lupus Erythematosus",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Cardiovascular Disease"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Doxycycline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Johns Hopkins University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2010-09",
      "completion_date": "2011-03",
      "has_results": false,
      "last_update_posted_date": "2012-03-30",
      "last_synced_at": "2026-10-01T08:51:05.259Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01014260"
    },
    {
      "nct_id": "NCT01782989",
      "title": "Clinical Study to Evaluate Treatment With ORACEA® for Geographic Atrophy (TOGA)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Geographic Atrophy"
      ],
      "interventions": [
        {
          "name": "ORACEA®",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Paul Yates, MD, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 286,
      "start_date": "2013-02",
      "completion_date": "2020-11",
      "has_results": false,
      "last_update_posted_date": "2022-11-04",
      "last_synced_at": "2026-10-01T08:51:05.259Z",
      "location_count": 37,
      "location_summary": "Glendale, California • Poway, California • Golden, Colorado + 31 more",
      "locations": [
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Poway",
          "state": "California"
        },
        {
          "city": "Golden",
          "state": "Colorado"
        },
        {
          "city": "Louisville",
          "state": "Colorado"
        },
        {
          "city": "Hamden",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01782989"
    }
  ]
}