{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Allopurinol+300+mg&page=2",
    "query": {
      "intervention": "Allopurinol 300 mg",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 47,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Allopurinol+300+mg&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Allopurinol+300+mg&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-02T06:45:58.286Z",
  "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": "NCT02279641",
      "title": "RDEA3170 and Allopurinol Combination Study in Gout Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Gout"
      ],
      "interventions": [
        {
          "name": "RDEA3170 10 mg",
          "type": "DRUG"
        },
        {
          "name": "allopurinol 300 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ardea Biosciences, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "MALE",
        "summary": "18 Years to 75 Years · Male only"
      },
      "enrollment_count": 12,
      "start_date": "2014-11-01",
      "completion_date": "2015-09-11",
      "has_results": true,
      "last_update_posted_date": "2017-12-20",
      "last_synced_at": "2026-10-02T06:45:58.286Z",
      "location_count": 1,
      "location_summary": "Overland Park, Kansas",
      "locations": [
        {
          "city": "Overland Park",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02279641"
    },
    {
      "nct_id": "NCT02581553",
      "title": "Lesinurad/Allopurinol 200/300 FDC Tablets Bioavailability",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "lesinurad/allopurinol 200/300 FDC tablets",
          "type": "DRUG"
        },
        {
          "name": "lesinurad 200 mg",
          "type": "DRUG"
        },
        {
          "name": "allopurinol 300 mg",
          "type": "DRUG"
        },
        {
          "name": "lesinurad/allopurinol 200/200 FDC tablets",
          "type": "DRUG"
        },
        {
          "name": "allopurinol 200 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ardea Biosciences, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "MALE",
        "summary": "18 Years to 65 Years · Male only"
      },
      "enrollment_count": 116,
      "start_date": "2015-10",
      "completion_date": "2016-08",
      "has_results": false,
      "last_update_posted_date": "2016-12-19",
      "last_synced_at": "2026-10-02T06:45:58.286Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02581553"
    },
    {
      "nct_id": "NCT05805605",
      "title": "Allo HSCT Using RIC and PTCy for Hematological Diseases",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Acute Myelogenous Leukemia",
        "Acute Lymphocytic Leukemia",
        "Biphenotypic Acute Leukemia",
        "Undifferentiated Leukemia",
        "Prolymphocytic Leukemia",
        "Chronic Myelogenous Leukemia",
        "Plasma Cell Leukemia",
        "Myelodysplastic Syndromes",
        "Leukemia, Myeloid",
        "Myelodysplastic Syndrome With Excess Blasts-1",
        "Burkitt Lymphoma",
        "Relapsed T-Cell Lymphoma",
        "Relapsed Chronic Lymphocytic Leukemia",
        "Small Lymphocytic Lymphoma",
        "Marginal Zone Lymphoma",
        "Follicular Lymphoma",
        "Myeloproliferative Neoplasm",
        "Myelofibrosis"
      ],
      "interventions": [
        {
          "name": "Peripheral Blood Stem Cell Transplant",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Allopurinol 300 MG",
          "type": "DRUG"
        },
        {
          "name": "Fludarabine",
          "type": "DRUG"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Bone Marrow Cell Transplant",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Total Body Irradiation",
          "type": "RADIATION"
        },
        {
          "name": "Sirolimus Pill",
          "type": "DRUG"
        },
        {
          "name": "Mycophenolate Mofetil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG",
        "RADIATION"
      ],
      "sponsor": "Masonic Cancer Center, University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "Up to 75 Years"
      },
      "enrollment_count": 56,
      "start_date": "2023-05-01",
      "completion_date": "2028-10-22",
      "has_results": false,
      "last_update_posted_date": "2026-07-06",
      "last_synced_at": "2026-10-02T06:45:58.286Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05805605"
    },
    {
      "nct_id": "NCT03836599",
      "title": "A Study to Assess the Safety and Pharmacokinetics of Verinurad and Allopurinol in Asian and Chinese Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Chronic Kidney Disease"
      ],
      "interventions": [
        {
          "name": "Verinurad",
          "type": "DRUG"
        },
        {
          "name": "Allopurinol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 6,
      "start_date": "2019-01-16",
      "completion_date": "2019-04-26",
      "has_results": false,
      "last_update_posted_date": "2019-05-13",
      "last_synced_at": "2026-10-02T06:45:58.286Z",
      "location_count": 1,
      "location_summary": "Glendale, California",
      "locations": [
        {
          "city": "Glendale",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03836599"
    },
    {
      "nct_id": "NCT00053196",
      "title": "Donor Stem Cell Transplant in Treating Patients With Relapsed Hematologic Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Leukemia",
        "Lymphoma",
        "Multiple Myeloma",
        "Plasma Cell Neoplasm",
        "Myelodysplastic Syndromes",
        "Myeloproliferative Neoplasms"
      ],
      "interventions": [
        {
          "name": "anti-thymocyte globulin",
          "type": "BIOLOGICAL"
        },
        {
          "name": "G-CSF",
          "type": "BIOLOGICAL"
        },
        {
          "name": "busulfan",
          "type": "DRUG"
        },
        {
          "name": "fludarabine phosphate",
          "type": "DRUG"
        },
        {
          "name": "methotrexate",
          "type": "DRUG"
        },
        {
          "name": "mycophenolate mofetil",
          "type": "DRUG"
        },
        {
          "name": "tacrolimus",
          "type": "DRUG"
        },
        {
          "name": "allogeneic cell transplantation",
          "type": "PROCEDURE"
        },
        {
          "name": "allopurinol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Alliance for Clinical Trials in Oncology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "69 Years",
        "sex": "ALL",
        "summary": "Up to 69 Years"
      },
      "enrollment_count": 82,
      "start_date": "2002-12",
      "completion_date": "2010-08",
      "has_results": false,
      "last_update_posted_date": "2016-07-01",
      "last_synced_at": "2026-10-02T06:45:58.286Z",
      "location_count": 12,
      "location_summary": "La Jolla, California • Lewes, Delaware • Newark, Delaware + 9 more",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Lewes",
          "state": "Delaware"
        },
        {
          "city": "Newark",
          "state": "Delaware"
        },
        {
          "city": "Wilmington",
          "state": "Delaware"
        },
        {
          "city": "Elkton MD",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00053196"
    },
    {
      "nct_id": "NCT01320722",
      "title": "Study of Vitamin D and Uric Acid Lowering on Kidney and Blood Vessel Function",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Renal Function",
        "Endothelial Function",
        "Blood Pressure",
        "Overweight",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Vitamin D ergocalciferol",
          "type": "DRUG"
        },
        {
          "name": "Probenecid",
          "type": "DRUG"
        },
        {
          "name": "Allopurinol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "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": 242,
      "start_date": "2011-03",
      "completion_date": "2015-06",
      "has_results": true,
      "last_update_posted_date": "2017-06-29",
      "last_synced_at": "2026-10-02T06:45:58.286Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01320722"
    },
    {
      "nct_id": "NCT01701622",
      "title": "The Blood Pressure Effects of Febuxostat in Patients Previously Treated With Allopurinol: A Pilot Study",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Blood Pressure",
        "Gout"
      ],
      "interventions": [
        {
          "name": "febuxostat",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Mississippi Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 1,
      "start_date": "2010-01",
      "completion_date": "2011-10",
      "has_results": true,
      "last_update_posted_date": "2018-01-12",
      "last_synced_at": "2026-10-02T06:45:58.286Z",
      "location_count": 1,
      "location_summary": "Jackson, Mississippi",
      "locations": [
        {
          "city": "Jackson",
          "state": "Mississippi"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01701622"
    },
    {
      "nct_id": "NCT01637623",
      "title": "Study of Cardiovascular Disease and Obstructive Sleep Apnea",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Severe Obstructive Sleep Apnea (Apnea Hypopnea Index > 30 Events/Hour)",
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Losartan",
          "type": "DRUG"
        },
        {
          "name": "Allopurinol",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 87,
      "start_date": "2012-06",
      "completion_date": "2015-06",
      "has_results": true,
      "last_update_posted_date": "2020-08-14",
      "last_synced_at": "2026-10-02T06:45:58.286Z",
      "location_count": 4,
      "location_summary": "Green Bay, Wisconsin • La Crosse, Wisconsin • Madison, Wisconsin + 1 more",
      "locations": [
        {
          "city": "Green Bay",
          "state": "Wisconsin"
        },
        {
          "city": "La Crosse",
          "state": "Wisconsin"
        },
        {
          "city": "Madison",
          "state": "Wisconsin"
        },
        {
          "city": "Marshfield",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01637623"
    },
    {
      "nct_id": "NCT00899431",
      "title": "Nonmyeloablative Stem Cell Transplantation for Chronic Lymphocytic Leukemia (CLL)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Lymphocytic Leukemia"
      ],
      "interventions": [
        {
          "name": "Lenalidomide",
          "type": "DRUG"
        },
        {
          "name": "Fludarabine",
          "type": "DRUG"
        },
        {
          "name": "Rituximab",
          "type": "DRUG"
        },
        {
          "name": "Thymoglobulin",
          "type": "DRUG"
        },
        {
          "name": "Stem Cell Transplantation",
          "type": "PROCEDURE"
        },
        {
          "name": "Bendamustine",
          "type": "DRUG"
        },
        {
          "name": "Allopurinol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 39,
      "start_date": "2009-05-06",
      "completion_date": "2018-10-07",
      "has_results": true,
      "last_update_posted_date": "2020-01-27",
      "last_synced_at": "2026-10-02T06:45:58.286Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00899431"
    },
    {
      "nct_id": "NCT01052272",
      "title": "Impact of Diabetes on Left Ventricular Remodeling",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Diabetes"
      ],
      "interventions": [
        {
          "name": "Ramipril",
          "type": "DRUG"
        },
        {
          "name": "Candesartan cilexetil",
          "type": "DRUG"
        },
        {
          "name": "Allopurinol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 72,
      "start_date": "2005-07",
      "completion_date": "2010-11",
      "has_results": true,
      "last_update_posted_date": "2012-12-17",
      "last_synced_at": "2026-10-02T06:45:58.286Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01052272"
    }
  ]
}