{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Viagra+%28sildenafil+citrate%29&page=6",
    "query": {
      "intervention": "Viagra (sildenafil citrate)",
      "page": 6
    },
    "page_size": 10
  },
  "pagination": {
    "page": 6,
    "page_size": 10,
    "total_count": 177,
    "total_pages": 18,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Viagra+%28sildenafil+citrate%29&page=7&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Viagra+%28sildenafil+citrate%29&page=5&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-14T02:23:56.127Z",
  "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": "NCT02802345",
      "title": "Efficacy and Safety of Nintedanib Co-administered With Sildenafil in Idiopathic Pulmonary Fibrosis Patients With Advanced Lung Function Impairment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Idiopathic Pulmonary Fibrosis"
      ],
      "interventions": [
        {
          "name": "Nintedanib",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Sildenafil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Boehringer Ingelheim",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 274,
      "start_date": "2016-06-30",
      "completion_date": "2018-04-13",
      "has_results": true,
      "last_update_posted_date": "2019-01-11",
      "last_synced_at": "2026-10-14T02:23:56.127Z",
      "location_count": 17,
      "location_summary": "Birmingham, Alabama • Stamford, Connecticut • Jacksonville, Florida + 13 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Stamford",
          "state": "Connecticut"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02802345"
    },
    {
      "nct_id": "NCT06872866",
      "title": "The Objective of This Phase 1 Study is to Evaluate the Food Effect of 100 mg Hezkue Turbo® (ASP-001.1, Sildenafil) Under Fed Versus 100 mg of Hezkue Turbo® (ASP-001.1, Sildenafil) Under Fasted Conditions in Healthy Adult Male Subjects",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Erectile Dysfunction"
      ],
      "interventions": [
        {
          "name": "ASP-001.1",
          "type": "DRUG"
        },
        {
          "name": "ASP-001.1",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Aspargo Labs, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "70 Years",
        "sex": "MALE",
        "summary": "20 Years to 70 Years · Male only"
      },
      "enrollment_count": 12,
      "start_date": "2025-04-15",
      "completion_date": "2026-02-28",
      "has_results": false,
      "last_update_posted_date": "2025-11-19",
      "last_synced_at": "2026-10-14T02:23:56.127Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06872866"
    },
    {
      "nct_id": "NCT00133679",
      "title": "Chronic Sildenafil for Severe Diaphragmatic Hernia",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hernia, Diaphragmatic",
        "Hypertension, Pulmonary",
        "Hypoplasia, Pulmonary"
      ],
      "interventions": [
        {
          "name": "sildenafil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Days",
        "maximum_age": "42 Days",
        "sex": "ALL",
        "summary": "10 Days to 42 Days"
      },
      "enrollment_count": 9,
      "start_date": "2006-02",
      "completion_date": "2013-10",
      "has_results": true,
      "last_update_posted_date": "2021-01-13",
      "last_synced_at": "2026-10-14T02:23:56.127Z",
      "location_count": 3,
      "location_summary": "Los Angeles, California • San Francisco, California • Chicago, Illinois",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00133679"
    },
    {
      "nct_id": "NCT02114775",
      "title": "Growth Hormone or Sildenafil as Therapies for Fatigue in Mild- Traumatic-brain-injury (MTBI)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Traumatic Brain Injury"
      ],
      "interventions": [
        {
          "name": "Growth Hormone",
          "type": "DRUG"
        },
        {
          "name": "Sildenafil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The University of Texas Medical Branch, Galveston",
      "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": 34,
      "start_date": "2014-12-12",
      "completion_date": "2017-11-10",
      "has_results": false,
      "last_update_posted_date": "2018-02-05",
      "last_synced_at": "2026-10-14T02:23:56.127Z",
      "location_count": 1,
      "location_summary": "Galveston, Texas",
      "locations": [
        {
          "city": "Galveston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02114775"
    },
    {
      "nct_id": "NCT00872170",
      "title": "Sildenafil to Improve Exercise Capacity in People With Thalassemia and Pulmonary Hypertension",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Thalassemia",
        "Hypertension, Pulmonary"
      ],
      "interventions": [
        {
          "name": "Sildenafil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Carelon Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "7 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "7 Years and older"
      },
      "enrollment_count": 27,
      "start_date": "2009-03",
      "completion_date": "2010-11",
      "has_results": true,
      "last_update_posted_date": "2014-02-21",
      "last_synced_at": "2026-10-14T02:23:56.127Z",
      "location_count": 1,
      "location_summary": "Oakland, California",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00872170"
    },
    {
      "nct_id": "NCT01954524",
      "title": "A Phase 1, Open-Label Study of Intravenous Sildenafil in Patients With Cirrhosis",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Cirrhosis"
      ],
      "interventions": [
        {
          "name": "IV bolus injection of Sildenafil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2,
      "start_date": "2014-05",
      "completion_date": "2015-10",
      "has_results": false,
      "last_update_posted_date": "2022-11-15",
      "last_synced_at": "2026-10-14T02:23:56.127Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01954524"
    },
    {
      "nct_id": "NCT00598585",
      "title": "Use of Sildenafil (Viagra) to Alter Fatigue, Functional Status and Impaired Cerebral Blood Flow in Patients With CFS",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Chronic Fatigue Syndrome"
      ],
      "interventions": [
        {
          "name": "Sildenafil (Viagra)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Charles Drew University of Medicine and Science",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 12,
      "start_date": "2002-07",
      "completion_date": "2010-12",
      "has_results": true,
      "last_update_posted_date": "2017-06-27",
      "last_synced_at": "2026-10-14T02:23:56.127Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00598585"
    },
    {
      "nct_id": "NCT00793338",
      "title": "Evaluation of Sildenafil for the Treatment of Moderate Congestive Heart Failure",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Sildenafil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of New Mexico",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 0,
      "start_date": "2008-11",
      "completion_date": "2011-02",
      "has_results": false,
      "last_update_posted_date": "2023-06-26",
      "last_synced_at": "2026-10-14T02:23:56.127Z",
      "location_count": 1,
      "location_summary": "Albuquerque, New Mexico",
      "locations": [
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00793338"
    },
    {
      "nct_id": "NCT02546609",
      "title": "The Effect Of NS-0200 Versus Placebo On Hepatic Fat Content In Patients With Non Alcoholic Fatty Liver Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "NAFLD"
      ],
      "interventions": [
        {
          "name": "Leu-Met-Sil 0.5",
          "type": "DRUG"
        },
        {
          "name": "Leu-Met-Sil 1.0",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "NuSirt Biopharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 91,
      "start_date": "2015-11-19",
      "completion_date": "2017-01-31",
      "has_results": true,
      "last_update_posted_date": "2018-05-02",
      "last_synced_at": "2026-10-14T02:23:56.127Z",
      "location_count": 13,
      "location_summary": "Chino, California • San Diego, California • Wheat Ridge, Colorado + 10 more",
      "locations": [
        {
          "city": "Chino",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Wheat Ridge",
          "state": "Colorado"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Marietta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02546609"
    },
    {
      "nct_id": "NCT02304705",
      "title": "Sildenafil in Heart Failure With Reactive Pulmonary Hypertension",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Heart Failure With Reactive Pulmonary Hypertension"
      ],
      "interventions": [
        {
          "name": "Sildenafil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Maya Guglin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 33,
      "start_date": "2015-01",
      "completion_date": "2017-06",
      "has_results": true,
      "last_update_posted_date": "2019-11-07",
      "last_synced_at": "2026-10-14T02:23:56.127Z",
      "location_count": 1,
      "location_summary": "Lexington, Kentucky",
      "locations": [
        {
          "city": "Lexington",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02304705"
    }
  ]
}