{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Hydroxychloroquine+400+mg",
    "query": {
      "intervention": "Hydroxychloroquine 400 mg"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 49,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Hydroxychloroquine+400+mg&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-26T01:44:25.816Z",
  "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": "NCT01326533",
      "title": "Reducing Risk of Type 2 Diabetes: Hydroxychloroquine Use in Pre-Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Pre-diabetes"
      ],
      "interventions": [
        {
          "name": "hydroxychloroquine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 32,
      "start_date": "2011-03",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2016-02-26",
      "last_synced_at": "2026-09-26T01:44:25.816Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01326533"
    },
    {
      "nct_id": "NCT04341441",
      "title": "Will Hydroxychloroquine Impede or Prevent COVID-19",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "COVID-19",
        "Coronavirus",
        "Coronavirus Infections",
        "SARS-CoV 2"
      ],
      "interventions": [
        {
          "name": "Hydroxychloroquine - Daily Dosing",
          "type": "DRUG"
        },
        {
          "name": "Hydroxychloroquine - Weekly Dosing",
          "type": "DRUG"
        },
        {
          "name": "Placebo oral tablet",
          "type": "OTHER"
        },
        {
          "name": "Monitoring Visit - Baseline",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Monitoring Visit - Week 4",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Monitoring Visit - Week 8",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Weekly Assessment",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Henry Ford Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 624,
      "start_date": "2020-04-07",
      "completion_date": "2020-12-15",
      "has_results": true,
      "last_update_posted_date": "2022-06-21",
      "last_synced_at": "2026-09-26T01:44:25.816Z",
      "location_count": 1,
      "location_summary": "Detroit, Michigan",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04341441"
    },
    {
      "nct_id": "NCT01144169",
      "title": "Study of Hydroxychloroquine Before Surgery in Patients With Primary Renal Cell Carcinoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Renal Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Hydroxychloroquine (HC)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 7,
      "start_date": "2010-10",
      "completion_date": "2016-09",
      "has_results": false,
      "last_update_posted_date": "2016-10-26",
      "last_synced_at": "2026-09-26T01:44:25.816Z",
      "location_count": 2,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01144169"
    },
    {
      "nct_id": "NCT04354428",
      "title": "Treatment for COVID-19 in High-Risk Adult Outpatients",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "COVID-19",
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "Ascorbic Acid",
          "type": "DRUG"
        },
        {
          "name": "Hydroxychloroquine Sulfate",
          "type": "DRUG"
        },
        {
          "name": "Azithromycin",
          "type": "DRUG"
        },
        {
          "name": "Folic Acid",
          "type": "DRUG"
        },
        {
          "name": "Lopinavir 200 MG / Ritonavir 50 MG [Kaletra]",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 289,
      "start_date": "2020-04-16",
      "completion_date": "2020-11-30",
      "has_results": true,
      "last_update_posted_date": "2022-08-08",
      "last_synced_at": "2026-09-26T01:44:25.816Z",
      "location_count": 6,
      "location_summary": "Chicago, Illinois • New Orleans, Louisiana • Boston, Massachusetts + 2 more",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "New Orleans",
          "state": "Louisiana"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Syracuse",
          "state": "New York"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04354428"
    },
    {
      "nct_id": "NCT04316169",
      "title": "Hydroxychloroquine, Abemaciclib and Endocrine Therapy in Hormone Receptor Positive (HR+)/Her 2 Negative Breast Cancer",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Solid Tumor",
        "Advanced Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Abemaciclib",
          "type": "DRUG"
        },
        {
          "name": "Hydroxychloroquine 200 mg",
          "type": "DRUG"
        },
        {
          "name": "Faslodex",
          "type": "DRUG"
        },
        {
          "name": "Anastrazole",
          "type": "DRUG"
        },
        {
          "name": "Letrozole",
          "type": "DRUG"
        },
        {
          "name": "Hydroxychloroquine 400 mg",
          "type": "DRUG"
        },
        {
          "name": "Hydroxychloroquine 600 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Medical College of Wisconsin",
      "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": "2021-10-21",
      "completion_date": "2028-01",
      "has_results": false,
      "last_update_posted_date": "2022-12-23",
      "last_synced_at": "2026-09-26T01:44:25.816Z",
      "location_count": 1,
      "location_summary": "Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04316169"
    },
    {
      "nct_id": "NCT03030118",
      "title": "Study of Anti-Malarials in Incomplete Lupus Erythematosus",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Systemic Lupus Erythematosus"
      ],
      "interventions": [
        {
          "name": "Hydroxychloroquine",
          "type": "DRUG"
        },
        {
          "name": "Placebo Oral Capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Milton S. Hershey Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "15 Years to 49 Years"
      },
      "enrollment_count": 187,
      "start_date": "2017-12-28",
      "completion_date": "2024-06-30",
      "has_results": true,
      "last_update_posted_date": "2025-09-16",
      "last_synced_at": "2026-09-26T01:44:25.816Z",
      "location_count": 7,
      "location_summary": "Los Angeles, California • Aurora, Colorado • Great Neck, New York + 4 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Great Neck",
          "state": "New York"
        },
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        },
        {
          "city": "Hershey",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03030118"
    },
    {
      "nct_id": "NCT04351620",
      "title": "High-dose Hydroxychloroquine for the Treatment of Ambulatory Patients With Mild COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Hydroxychloroquine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2020-04-20",
      "completion_date": "2020-06-10",
      "has_results": false,
      "last_update_posted_date": "2023-02-23",
      "last_synced_at": "2026-09-26T01:44:25.816Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04351620"
    },
    {
      "nct_id": "NCT04374552",
      "title": "Asymptomatic COVID-19 Trial",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "SARS-CoV-2 Infection"
      ],
      "interventions": [
        {
          "name": "Hydroxychloroquine sulfate &Azithromycin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rutgers, The State University of New Jersey",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "20 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2020-05-05",
      "completion_date": "2021-04",
      "has_results": false,
      "last_update_posted_date": "2020-11-02",
      "last_synced_at": "2026-09-26T01:44:25.816Z",
      "location_count": 1,
      "location_summary": "New Brunswick, New Jersey",
      "locations": [
        {
          "city": "New Brunswick",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04374552"
    },
    {
      "nct_id": "NCT01687179",
      "title": "Safety Study of Sirolimus and Hydroxychloroquine in Women With Lymphangioleiomyomatosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Lymphangioleiomyomatosis"
      ],
      "interventions": [
        {
          "name": "\"Sirolimus\" and \"Hydroxychloroquine\" 200 mg",
          "type": "DRUG"
        },
        {
          "name": "\"Sirolimus\" and \"Hydroxychloroquine\" 400 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 85 Years · Female only"
      },
      "enrollment_count": 14,
      "start_date": "2012-09",
      "completion_date": "2015-08",
      "has_results": true,
      "last_update_posted_date": "2018-10-11",
      "last_synced_at": "2026-09-26T01:44:25.816Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01687179"
    },
    {
      "nct_id": "NCT00579878",
      "title": "Triple III Comparison of Leflunomide Alone Versus Two DMARD Combinations in the Treatment of Rheumatoid Arthritis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Rheumatoid Arthritis"
      ],
      "interventions": [
        {
          "name": "Leflunomide",
          "type": "DRUG"
        },
        {
          "name": "Methotrexate-Sulfasalazine-Hydroxychloroquine",
          "type": "DRUG"
        },
        {
          "name": "Leflunomide-Sulfasalazine-Hydroxychloroquine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Nebraska",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "19 Years to 80 Years"
      },
      "enrollment_count": 69,
      "start_date": "2001-03-27",
      "completion_date": "2010-03-11",
      "has_results": true,
      "last_update_posted_date": "2023-10-02",
      "last_synced_at": "2026-09-26T01:44:25.816Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00579878"
    }
  ]
}