{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Hydroxychloroquine+Sulfate+400+mg+twice+a+day",
    "query": {
      "intervention": "Hydroxychloroquine Sulfate 400 mg twice a day"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 17,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Hydroxychloroquine+Sulfate+400+mg+twice+a+day&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-07T21:24:46.068Z",
  "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": "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": "2026-10-07T21:24:46.068Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01687179"
    },
    {
      "nct_id": "NCT04735068",
      "title": "Binimetinib and Hydroxychloroquine in Patients With Advanced KRAS Mutant Non-Small Cell Lung Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Non-Small Cell Lung Cancer",
        "KRAS Mutation-Related Tumors"
      ],
      "interventions": [
        {
          "name": "Binimetinib Pill",
          "type": "DRUG"
        },
        {
          "name": "Hydroxychloroquine Pill",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 9,
      "start_date": "2021-04-09",
      "completion_date": "2023-12-31",
      "has_results": true,
      "last_update_posted_date": "2025-04-01",
      "last_synced_at": "2026-10-07T21:24:46.068Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04735068"
    },
    {
      "nct_id": "NCT04329923",
      "title": "The PATCH Trial (Prevention And Treatment of COVID-19 With Hydroxychloroquine)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Hydroxychloroquine Sulfate 400 mg twice a day",
          "type": "DRUG"
        },
        {
          "name": "Hydroxychloroquine Sulfate 600 mg twice a day",
          "type": "DRUG"
        },
        {
          "name": "Hydroxychloroquine Sulfate 600 mg once a day",
          "type": "DRUG"
        },
        {
          "name": "Placebo oral tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ravi Amaravadi, MD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 173,
      "start_date": "2020-04-09",
      "completion_date": "2020-11-13",
      "has_results": true,
      "last_update_posted_date": "2020-12-10",
      "last_synced_at": "2026-10-07T21:24:46.068Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04329923"
    },
    {
      "nct_id": "NCT04011410",
      "title": "Hydroxychloroquine to Increase Tumor Suppressor PAR-4 Levels in Oligometastatic Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer Recurrent"
      ],
      "interventions": [
        {
          "name": "Hydroxychloroquine Sulfate 200Mg Tab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Patrick Hensley",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 20,
      "start_date": "2019-12-03",
      "completion_date": "2024-03-08",
      "has_results": true,
      "last_update_posted_date": "2025-04-11",
      "last_synced_at": "2026-10-07T21:24:46.068Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04011410"
    },
    {
      "nct_id": "NCT01784523",
      "title": "Hydroxychloroquine for the First Thrombosis Prevention in Antiphospholipid Antibody Positive Patients",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Antiphospholipid Syndrome"
      ],
      "interventions": [
        {
          "name": "Hydroxychloroquine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hospital for Special Surgery, New York",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 11,
      "start_date": "2013-02",
      "completion_date": "2015-09-30",
      "has_results": true,
      "last_update_posted_date": "2021-09-14",
      "last_synced_at": "2026-10-07T21:24:46.068Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01784523"
    },
    {
      "nct_id": "NCT04332991",
      "title": "Outcomes Related to COVID-19 Treated With Hydroxychloroquine Among In-patients With Symptomatic Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Coronavirus",
        "Acute Respiratory Infection",
        "SARS-CoV Infection"
      ],
      "interventions": [
        {
          "name": "Hydroxychloroquine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 479,
      "start_date": "2020-04-02",
      "completion_date": "2020-07-23",
      "has_results": true,
      "last_update_posted_date": "2021-03-17",
      "last_synced_at": "2026-10-07T21:24:46.068Z",
      "location_count": 40,
      "location_summary": "Tucson, Arizona • Fresno, California • Los Angeles, California + 31 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04332991"
    },
    {
      "nct_id": "NCT00726596",
      "title": "Hydroxychloroquine in Treating Patients With Rising PSA Levels After Local Therapy for Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "hydroxychloroquine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rutgers, The State University of New Jersey",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 64,
      "start_date": "2008-08",
      "completion_date": "2018-01",
      "has_results": true,
      "last_update_posted_date": "2022-06-16",
      "last_synced_at": "2026-10-07T21:24:46.068Z",
      "location_count": 5,
      "location_summary": "Hamilton, New Jersey • Morristown, New Jersey • New Brunswick, New Jersey + 2 more",
      "locations": [
        {
          "city": "Hamilton",
          "state": "New Jersey"
        },
        {
          "city": "Morristown",
          "state": "New Jersey"
        },
        {
          "city": "New Brunswick",
          "state": "New Jersey"
        },
        {
          "city": "Summit",
          "state": "New Jersey"
        },
        {
          "city": "Voorhees Township",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00726596"
    },
    {
      "nct_id": "NCT00962845",
      "title": "Hydroxychloroquine in Patients With Stage III or Stage IV Melanoma That Can Be Removed by Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Melanoma (Skin)"
      ],
      "interventions": [
        {
          "name": "hydroxychloroquine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rutgers, The State University of New Jersey",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "18 Years to 120 Years"
      },
      "enrollment_count": 20,
      "start_date": "2010-09",
      "completion_date": "2013-05-30",
      "has_results": false,
      "last_update_posted_date": "2022-09-07",
      "last_synced_at": "2026-10-07T21:24:46.068Z",
      "location_count": 1,
      "location_summary": "New Brunswick, New Jersey",
      "locations": [
        {
          "city": "New Brunswick",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00962845"
    },
    {
      "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": "2026-10-07T21:24:46.068Z",
      "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": "NCT04358068",
      "title": "Evaluating the Efficacy of Hydroxychloroquine and Azithromycin to Prevent Hospitalization or Death in Persons With COVID-19",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "COVID-19",
        "SARS-CoV 2"
      ],
      "interventions": [
        {
          "name": "Hydroxychloroquine (HCQ)",
          "type": "DRUG"
        },
        {
          "name": "Azithromycin (Azithro)",
          "type": "DRUG"
        },
        {
          "name": "Placebo for Hydroxychloroquine",
          "type": "DRUG"
        },
        {
          "name": "Placebo for Azithromycin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2020-05-13",
      "completion_date": "2020-07-08",
      "has_results": true,
      "last_update_posted_date": "2021-11-16",
      "last_synced_at": "2026-10-07T21:24:46.068Z",
      "location_count": 11,
      "location_summary": "Birmingham, Alabama • San Diego, California • Torrance, California + 7 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04358068"
    }
  ]
}