{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Hydrochlorothiazide+25+mg&page=4",
    "query": {
      "intervention": "Hydrochlorothiazide 25 mg",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 82,
    "total_pages": 9,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Hydrochlorothiazide+25+mg&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Hydrochlorothiazide+25+mg&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-04T04:28:15.135Z",
  "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": "NCT00439738",
      "title": "Safety/Efficacy of Valsartan/Hydrochlorothiazide Combination Compared to Hydrochlorothiazide in Obese Hypertensive Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "HCTZ + Amlodipine",
          "type": "DRUG"
        },
        {
          "name": "Valsartan/HCTZ",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 412,
      "start_date": "2006-12",
      "completion_date": null,
      "has_results": true,
      "last_update_posted_date": "2017-05-16",
      "last_synced_at": "2026-10-04T04:28:15.135Z",
      "location_count": 5,
      "location_summary": "Muscle Shoals, Alabama • Westlake Village, California • Oklahoma City, Oklahoma + 2 more",
      "locations": [
        {
          "city": "Muscle Shoals",
          "state": "Alabama"
        },
        {
          "city": "Westlake Village",
          "state": "California"
        },
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        },
        {
          "city": "Euless",
          "state": "Texas"
        },
        {
          "city": "Port Orchard",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00439738"
    },
    {
      "nct_id": "NCT00219102",
      "title": "A Clinical Study to Evaluate Safety & Efficacy of the Combination of Aliskiren, Valsartan & Hydrochlorothiazide in Diabetic Hypertensive Nonresponder Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hypertension",
        "Diabetes"
      ],
      "interventions": [
        {
          "name": "aliskiren",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 336,
      "start_date": "2005-06",
      "completion_date": "2007-05",
      "has_results": false,
      "last_update_posted_date": "2020-02-11",
      "last_synced_at": "2026-10-04T04:28:15.135Z",
      "location_count": 1,
      "location_summary": "Salisbury, North Carolina",
      "locations": [
        {
          "city": "Salisbury",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00219102"
    },
    {
      "nct_id": "NCT00171405",
      "title": "A Clinical Study to Evaluate the Long-term Safety (12 Months) of the Combination of Aliskiren 300 mg and Hydrochlorothiazide 25 mg",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "aliskiren",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 250,
      "start_date": "2005-06",
      "completion_date": "2006-02",
      "has_results": false,
      "last_update_posted_date": "2016-11-18",
      "last_synced_at": "2026-10-04T04:28:15.135Z",
      "location_count": 1,
      "location_summary": "East Hanover, New Jersey",
      "locations": [
        {
          "city": "East Hanover",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00171405"
    },
    {
      "nct_id": "NCT00654745",
      "title": "18 Week Study Evaluating Safety and Efficacy of Olmesartan, Amlodipine, and Hydrochlorothiazide, in Type 2 Diabetics",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Type 2 Diabetes",
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Amlodipine",
          "type": "DRUG"
        },
        {
          "name": "amlodipine / olmesartan medoxomil combination",
          "type": "DRUG"
        },
        {
          "name": "Hydrochlorothiazide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Daiichi Sankyo",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 207,
      "start_date": "2008-05",
      "completion_date": "2009-06",
      "has_results": true,
      "last_update_posted_date": "2010-07-13",
      "last_synced_at": "2026-10-04T04:28:15.135Z",
      "location_count": 21,
      "location_summary": "Los Angeles, California • Sylmar, California • Tustin, California + 18 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sylmar",
          "state": "California"
        },
        {
          "city": "Tustin",
          "state": "California"
        },
        {
          "city": "Aventura",
          "state": "Florida"
        },
        {
          "city": "DeLand",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00654745"
    },
    {
      "nct_id": "NCT04934228",
      "title": "Mitigating the Pro-inflammatory Phenotype of Obesity",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Blood Pressure",
        "Diabetes",
        "Obesity",
        "Insulin Resistance",
        "Diuretics Drug Reactions",
        "Sympathetic Nerve Activity"
      ],
      "interventions": [
        {
          "name": "Hydrochlorothiazide 12.5Mg Tab",
          "type": "DRUG"
        },
        {
          "name": "Clonidine Pill",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "79 Years",
        "sex": "ALL",
        "summary": "18 Years to 79 Years"
      },
      "enrollment_count": 60,
      "start_date": "2021-07-01",
      "completion_date": "2027-08-01",
      "has_results": false,
      "last_update_posted_date": "2025-06-05",
      "last_synced_at": "2026-10-04T04:28:15.135Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04934228"
    },
    {
      "nct_id": "NCT05582837",
      "title": "Treatment of Meniere's Disease With Migraine Medications",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Ménière"
      ],
      "interventions": [
        {
          "name": "nortriptyline + topiramate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, Irvine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "25 Years to 85 Years"
      },
      "enrollment_count": 40,
      "start_date": "2022-08-01",
      "completion_date": "2027-12-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-22",
      "last_synced_at": "2026-10-04T04:28:15.135Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05582837"
    },
    {
      "nct_id": "NCT01415505",
      "title": "Combination of Nebivolol and Valsartan Given as Free Tablets for Stage 1 or Stage 2 Hypertension",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Nebivolol, Valsartan and Hydrochlorothiazide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Forest Laboratories",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 812,
      "start_date": "2011-08",
      "completion_date": "2013-04",
      "has_results": false,
      "last_update_posted_date": "2013-06-04",
      "last_synced_at": "2026-10-04T04:28:15.135Z",
      "location_count": 135,
      "location_summary": "Birmingham, Alabama • Foley, Alabama • Gulf Shores, Alabama + 113 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Foley",
          "state": "Alabama"
        },
        {
          "city": "Gulf Shores",
          "state": "Alabama"
        },
        {
          "city": "Muscle Shoals",
          "state": "Alabama"
        },
        {
          "city": "Chandler",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01415505"
    },
    {
      "nct_id": "NCT02278471",
      "title": "The SCCS Polypill Pilot Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hypertension",
        "Hyperlipidemia"
      ],
      "interventions": [
        {
          "name": "Polypill (atorvastatin, amlodipine, losartan, and hydrochlorothiazide)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "45 Years to 75 Years"
      },
      "enrollment_count": 303,
      "start_date": "2015-12",
      "completion_date": "2018-06-27",
      "has_results": true,
      "last_update_posted_date": "2021-05-14",
      "last_synced_at": "2026-10-04T04:28:15.135Z",
      "location_count": 1,
      "location_summary": "Mobile, Alabama",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02278471"
    },
    {
      "nct_id": "NCT03198793",
      "title": "Novel Evaluation With QGC001 in Hypertensive Overweight Patients of Multiple Ethnic Origins",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "QGC001",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Quantum Genomics SA",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 256,
      "start_date": "2017-10-13",
      "completion_date": "2018-11-12",
      "has_results": false,
      "last_update_posted_date": "2018-12-11",
      "last_synced_at": "2026-10-04T04:28:15.135Z",
      "location_count": 1,
      "location_summary": "Port Orange, Florida",
      "locations": [
        {
          "city": "Port Orange",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03198793"
    },
    {
      "nct_id": "NCT02412761",
      "title": "Series of N-of-1 Crossover Trials of Antihypertensive Therapy in Adolescents With Essential Hypertension",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Essential Hypertension"
      ],
      "interventions": [
        {
          "name": "Lisinopril",
          "type": "DRUG"
        },
        {
          "name": "Amlodipine",
          "type": "DRUG"
        },
        {
          "name": "Hydrochlorothiazide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "22 Years",
        "sex": "ALL",
        "summary": "9 Years to 22 Years"
      },
      "enrollment_count": 42,
      "start_date": "2013-06",
      "completion_date": "2016-07",
      "has_results": true,
      "last_update_posted_date": "2018-11-15",
      "last_synced_at": "2026-10-04T04:28:15.135Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02412761"
    }
  ]
}