{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=prazosin+hydrochloride",
    "query": {
      "intervention": "prazosin hydrochloride"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 71,
    "total_pages": 8,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=prazosin+hydrochloride&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-24T07:15:52.232Z",
  "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": "NCT00393874",
      "title": "Efficacy of Sleep Interventions for Posttraumatic Stress Disorder (PTSD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anxiety Disorders",
        "Mood Disorders",
        "Insomnia",
        "Nightmares"
      ],
      "interventions": [
        {
          "name": "Behavioral Sleep Intervention",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Prazosin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL",
        "DRUG"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 50,
      "start_date": "2006-10",
      "completion_date": "2011-06",
      "has_results": true,
      "last_update_posted_date": "2016-10-24",
      "last_synced_at": "2026-09-24T07:15:52.232Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00393874"
    },
    {
      "nct_id": "NCT00261729",
      "title": "Prazosin vs. Paroxetine in Combat Stress Symptoms in OIF/OEF Returnees",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep Disorders",
        "Stress Disorders, Post-Traumatic"
      ],
      "interventions": [
        {
          "name": "Paroxetine",
          "type": "DRUG"
        },
        {
          "name": "Prazosin",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "US Department of Veterans Affairs",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 210,
      "start_date": "2004-07",
      "completion_date": "2009-12",
      "has_results": false,
      "last_update_posted_date": "2009-12-03",
      "last_synced_at": "2026-09-24T07:15:52.232Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00261729"
    },
    {
      "nct_id": "NCT00532493",
      "title": "Cooperative Studies Program #563 - Prazosin and Combat Trauma PTSD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "PTSD",
        "Sleep Disorders"
      ],
      "interventions": [
        {
          "name": "prazosin",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 304,
      "start_date": "2010-01-06",
      "completion_date": "2013-05-31",
      "has_results": true,
      "last_update_posted_date": "2018-05-01",
      "last_synced_at": "2026-09-24T07:15:52.232Z",
      "location_count": 15,
      "location_summary": "Loma Linda, California • Long Beach, California • Palo Alto, California + 12 more",
      "locations": [
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Decatur",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00532493"
    },
    {
      "nct_id": "NCT02989493",
      "title": "Testing Doxazosin to Treat Stress Mechanisms in Alcoholism",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Alcoholism"
      ],
      "interventions": [
        {
          "name": "Doxazosin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 61,
      "start_date": "2017-04-12",
      "completion_date": "2020-03-13",
      "has_results": true,
      "last_update_posted_date": "2021-03-18",
      "last_synced_at": "2026-09-24T07:15:52.232Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02989493"
    },
    {
      "nct_id": "NCT02266329",
      "title": "Chronic Postconcussive Headache: A Placebo-Controlled Treatment Trial of Prazosin",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Posttraumatic Headache",
        "Combat Disorders",
        "Post Concussion Syndrome",
        "Headache",
        "Mild Traumatic Brain Injury",
        "Posttraumatic Migraine"
      ],
      "interventions": [
        {
          "name": "prazosin hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 89,
      "start_date": "2016-01-04",
      "completion_date": "2023-09-30",
      "has_results": true,
      "last_update_posted_date": "2026-03-30",
      "last_synced_at": "2026-09-24T07:15:52.232Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02266329"
    },
    {
      "nct_id": "NCT02226367",
      "title": "Prazosin Augmentation of Outpatient Treatment of Alcohol Use Disorders in Active Duty Soldiers With and Without PTSD",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Alcohol Use Disorders",
        "Stress Disorders, Posttraumatic",
        "Combat Disorders"
      ],
      "interventions": [
        {
          "name": "prazosin hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Seattle Institute for Biomedical and Clinical Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 158,
      "start_date": "2015-01",
      "completion_date": "2018-10-20",
      "has_results": true,
      "last_update_posted_date": "2023-02-03",
      "last_synced_at": "2026-09-24T07:15:52.232Z",
      "location_count": 1,
      "location_summary": "Tacoma, Washington",
      "locations": [
        {
          "city": "Tacoma",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02226367"
    },
    {
      "nct_id": "NCT01923129",
      "title": "Optimal Duration of Indwelling Urinary Catheter Following Pelvic Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Urinary Retention"
      ],
      "interventions": [
        {
          "name": "Prazosin given 6 hours prior to catheter removal in the 24 hour group",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cedars-Sinai Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 142,
      "start_date": "2012-11-30",
      "completion_date": "2017-11-22",
      "has_results": true,
      "last_update_posted_date": "2019-02-20",
      "last_synced_at": "2026-09-24T07:15:52.232Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01923129"
    },
    {
      "nct_id": "NCT06629090",
      "title": "Brain Blood Vessel Responses to Changes in Blood Flow: Younger Cohort",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Magnetic Resonance Imaging",
        "Cerebrovascular Circulation"
      ],
      "interventions": [
        {
          "name": "MRI",
          "type": "DEVICE"
        },
        {
          "name": "Prazosin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "DRUG"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "20 Years to 40 Years"
      },
      "enrollment_count": 36,
      "start_date": "2025-12-17",
      "completion_date": "2027-05",
      "has_results": false,
      "last_update_posted_date": "2026-07-06",
      "last_synced_at": "2026-09-24T07:15:52.232Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06629090"
    },
    {
      "nct_id": "NCT00762710",
      "title": "Study of the Medication Prazosin for Alcohol Dependence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Alcoholism"
      ],
      "interventions": [
        {
          "name": "Prazosin medication",
          "type": "DRUG"
        },
        {
          "name": "Placebo medication",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Seattle Institute for Biomedical and Clinical Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 92,
      "start_date": "2008-01",
      "completion_date": "2014-06",
      "has_results": true,
      "last_update_posted_date": "2020-06-04",
      "last_synced_at": "2026-09-24T07:15:52.232Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00762710"
    },
    {
      "nct_id": "NCT01798992",
      "title": "Effect of Beta-blockers on Structural Remodeling and Gene Expression in the Failing Human Heart",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Idiopathic Dilated Cardiomyopathy"
      ],
      "interventions": [
        {
          "name": "Carvedilol",
          "type": "DRUG"
        },
        {
          "name": "Metoprolol succinate",
          "type": "DRUG"
        },
        {
          "name": "Metoprolol succinate + doxazosin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 56,
      "start_date": "2000-09",
      "completion_date": "2009-03",
      "has_results": true,
      "last_update_posted_date": "2023-11-29",
      "last_synced_at": "2026-09-24T07:15:52.232Z",
      "location_count": 2,
      "location_summary": "Denver, Colorado • Salt Lake City, Utah",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01798992"
    }
  ]
}