{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=HCTZ-hydrochlorothiazide&page=2",
    "query": {
      "intervention": "HCTZ-hydrochlorothiazide",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 156,
    "total_pages": 16,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=HCTZ-hydrochlorothiazide&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=HCTZ-hydrochlorothiazide&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-30T08:54:29.035Z",
  "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": "NCT00240448",
      "title": "A Randomized, Double-blind, Placebo Controlled Comparison of Telmisartan Hydrochlorothiazide (HCT) and Valsartan HCT in Hypertension (HTN) Stage I/II Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "telmisartan 80 mg/hydrochlorothiazide 25 mg",
          "type": "DRUG"
        },
        {
          "name": "valsartan 160 mg/hydrochlorothiazide 25 mg",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Boehringer Ingelheim",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 1109,
      "start_date": "2003-09",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-11-05",
      "last_synced_at": "2026-09-30T08:54:29.035Z",
      "location_count": 100,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 90 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Sctoosdale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00240448"
    },
    {
      "nct_id": "NCT00171535",
      "title": "Efficacy and Safety of Valsartan/Amlodipine Combination in Patients With Severe Hypertension",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "valsartan/amlodipine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novartis",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 130,
      "start_date": "2004-10",
      "completion_date": "2005-04",
      "has_results": false,
      "last_update_posted_date": "2011-11-08",
      "last_synced_at": "2026-09-30T08:54:29.035Z",
      "location_count": 1,
      "location_summary": "East Hanover, New Jersey",
      "locations": [
        {
          "city": "East Hanover",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00171535"
    },
    {
      "nct_id": "NCT02100462",
      "title": "Chlorthalidone and HCTZ Impacts on Platelet Activation",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Chlorthalidone 12.5 mg",
          "type": "DRUG"
        },
        {
          "name": "Hydrochlorothiazide 25 mg",
          "type": "DRUG"
        },
        {
          "name": "Aspirin 81 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Creighton University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2014-03",
      "completion_date": "2016-12",
      "has_results": false,
      "last_update_posted_date": "2015-12-14",
      "last_synced_at": "2026-09-30T08:54:29.035Z",
      "location_count": 1,
      "location_summary": "Omaha, Nebraska",
      "locations": [
        {
          "city": "Omaha",
          "state": "Nebraska"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02100462"
    },
    {
      "nct_id": "NCT00778674",
      "title": "Bioequivalence Study of Benazepril HCl / Hydrochlorothiazide 20 mg/ 25 mg Tablets Under Fed Conditions",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Benazepril HCl/ Hydrochlorothiazide 20 mg/ 25 mg Tablets",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ranbaxy Laboratories Limited",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2004-10",
      "completion_date": "2004-12",
      "has_results": false,
      "last_update_posted_date": "2008-10-23",
      "last_synced_at": "2026-09-30T08:54:29.035Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00778674"
    },
    {
      "nct_id": "NCT00835042",
      "title": "Moexipril HCL/Hydrochlorothiazide 15/25 mg Tablets Under Fasting Conditions",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Moexipril HCl/hydrochlorothiazide 15/25 mg tablets",
          "type": "DRUG"
        },
        {
          "name": "UNIRETIC® 15/25 mg tablets",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Teva Pharmaceuticals USA",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2003-10",
      "completion_date": "2003-11",
      "has_results": true,
      "last_update_posted_date": "2024-08-20",
      "last_synced_at": "2026-09-30T08:54:29.035Z",
      "location_count": 2,
      "location_summary": "Saint Charles, Missouri • Houston, Texas",
      "locations": [
        {
          "city": "Saint Charles",
          "state": "Missouri"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00835042"
    },
    {
      "nct_id": "NCT00667719",
      "title": "A Long Term Safety Study to Test the Combination of Aliskiren/ Amlodipine / Hydrochlorothiazide in Participants With Essential Hypertension",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Essential Hypertension"
      ],
      "interventions": [
        {
          "name": "Aliskiren",
          "type": "DRUG"
        },
        {
          "name": "Amlodipine",
          "type": "DRUG"
        },
        {
          "name": "Hydrochlorothiazide",
          "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": 564,
      "start_date": "2008-06-05",
      "completion_date": "2009-10-05",
      "has_results": true,
      "last_update_posted_date": "2021-06-07",
      "last_synced_at": "2026-09-30T08:54:29.035Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00667719"
    },
    {
      "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": "2026-09-30T08:54:29.035Z",
      "location_count": 1,
      "location_summary": "Salisbury, North Carolina",
      "locations": [
        {
          "city": "Salisbury",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00219102"
    },
    {
      "nct_id": "NCT00744237",
      "title": "Study of the Glycemic Effects of Nebivolol Compared With Metoprolol and HCTZ in Diabetic Hypertensive Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypertension",
        "Type 2 Diabetes Mellitus"
      ],
      "interventions": [
        {
          "name": "Nebivolol",
          "type": "DRUG"
        },
        {
          "name": "Metoprolol ER",
          "type": "DRUG"
        },
        {
          "name": "HCTZ",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Forest Laboratories",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 231,
      "start_date": "2008-08",
      "completion_date": null,
      "has_results": true,
      "last_update_posted_date": "2011-07-29",
      "last_synced_at": "2026-09-30T08:54:29.035Z",
      "location_count": 62,
      "location_summary": "Athens, Alabama • Huntsville, Alabama • Bell Gardens, California + 54 more",
      "locations": [
        {
          "city": "Athens",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Bell Gardens",
          "state": "California"
        },
        {
          "city": "Buena Park",
          "state": "California"
        },
        {
          "city": "Chino",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00744237"
    },
    {
      "nct_id": "NCT00387517",
      "title": "Safety/Efficacy of Combo Therapy With Aliskiren & Hydrochlorothiazide vs Therapy With Hydrochlorothiazide Alone in Patients With Hypertension",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "Aliskiren/HCTZ",
          "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": 726,
      "start_date": "2006-10",
      "completion_date": "2007-08",
      "has_results": false,
      "last_update_posted_date": "2017-02-07",
      "last_synced_at": "2026-09-30T08:54:29.035Z",
      "location_count": 1,
      "location_summary": "East Hanover, New Jersey",
      "locations": [
        {
          "city": "East Hanover",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00387517"
    },
    {
      "nct_id": "NCT00649233",
      "title": "Food Study of Metoprolol Tartrate/Hydrochlorothiazide Tablets 100/50 mg to Lopressor HCT® Tablets 100/50 mg",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Metoprolol Tartrate/Hydrochlorothiazide Tablets 100/50 mg",
          "type": "DRUG"
        },
        {
          "name": "Lopressor HCT® Tablets 100/50 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mylan Pharmaceuticals Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 32,
      "start_date": "2003-01",
      "completion_date": "2003-02",
      "has_results": false,
      "last_update_posted_date": "2024-04-24",
      "last_synced_at": "2026-09-30T08:54:29.035Z",
      "location_count": 1,
      "location_summary": "Fargo, North Dakota",
      "locations": [
        {
          "city": "Fargo",
          "state": "North Dakota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00649233"
    }
  ]
}