{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Udenafil",
    "query": {
      "intervention": "Udenafil"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-04T12:27:35.688Z",
  "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": "NCT03430583",
      "title": "Evaluation of Fontan-associated Hepatic Stiffness and the Efficacy of Udenafil in Reducing Liver Stiffness",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Single Ventricle Heart Disease"
      ],
      "interventions": [
        {
          "name": "Udenafil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mezzion Pharma Co. Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "12 Years and older"
      },
      "enrollment_count": 88,
      "start_date": "2018-02-20",
      "completion_date": "2020-09-16",
      "has_results": true,
      "last_update_posted_date": "2025-10-14",
      "last_synced_at": "2026-09-04T12:27:35.688Z",
      "location_count": 16,
      "location_summary": "Aurora, Colorado • Wilmington, Delaware • Washington D.C., District of Columbia + 13 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Wilmington",
          "state": "Delaware"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03430583"
    },
    {
      "nct_id": "NCT01037218",
      "title": "Treatment of Erectile Dysfunction II",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Erectile Dysfunction"
      ],
      "interventions": [
        {
          "name": "Udenafil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Warner Chilcott",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "19 Years and older · Male only"
      },
      "enrollment_count": 601,
      "start_date": "2009-09",
      "completion_date": "2010-04",
      "has_results": true,
      "last_update_posted_date": "2015-06-19",
      "last_synced_at": "2026-09-04T12:27:35.688Z",
      "location_count": 40,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Tempe, Arizona + 36 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Chino",
          "state": "California"
        },
        {
          "city": "Tarzana",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01037218"
    },
    {
      "nct_id": "NCT03013751",
      "title": "A Extension Study of Udenafil in Adolescents",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Functional Single Ventricle Heart Disease"
      ],
      "interventions": [
        {
          "name": "Udenafil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mezzion Pharma Co. Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "12 Years to 18 Years"
      },
      "enrollment_count": 301,
      "start_date": "2017-02-06",
      "completion_date": "2022-12-20",
      "has_results": true,
      "last_update_posted_date": "2025-12-09",
      "last_synced_at": "2026-09-04T12:27:35.688Z",
      "location_count": 21,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • San Diego, California + 18 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Wilmington",
          "state": "Delaware"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03013751"
    },
    {
      "nct_id": "NCT02201342",
      "title": "Pharmacokinetic/Pharmacodynamic Study of Udenafil in Adolescents",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Single Ventricle Heart Disease After Fontan Surgery"
      ],
      "interventions": [
        {
          "name": "Udenafil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mezzion Pharma Co. Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "14 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "14 Years to 18 Years"
      },
      "enrollment_count": 36,
      "start_date": "2014-07",
      "completion_date": "2015-04",
      "has_results": true,
      "last_update_posted_date": "2025-05-06",
      "last_synced_at": "2026-09-04T12:27:35.688Z",
      "location_count": 5,
      "location_summary": "Indianapolis, Indiana • Ann Arbor, Michigan • Cincinnati, Ohio + 2 more",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02201342"
    },
    {
      "nct_id": "NCT02741115",
      "title": "Fontan Udenafil Exercise Longitudinal Assessment Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Single Ventricle Heart Disease"
      ],
      "interventions": [
        {
          "name": "Udenafil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mezzion Pharma Co. Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "12 Years to 18 Years"
      },
      "enrollment_count": 400,
      "start_date": "2016-07-22",
      "completion_date": "2019-04-30",
      "has_results": true,
      "last_update_posted_date": "2025-06-17",
      "last_synced_at": "2026-09-04T12:27:35.688Z",
      "location_count": 26,
      "location_summary": "Phoenix, Arizona • Los Angeles, California • San Diego, California + 22 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02741115"
    },
    {
      "nct_id": "NCT01230541",
      "title": "Effect of Udenafil on Spermatogenesis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Spermatogenesis",
        "Erectile Dysfunction"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Udenafil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Warner Chilcott",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "64 Years",
        "sex": "MALE",
        "summary": "25 Years to 64 Years · Male only"
      },
      "enrollment_count": 239,
      "start_date": "2010-09",
      "completion_date": "2011-11",
      "has_results": false,
      "last_update_posted_date": "2011-11-30",
      "last_synced_at": "2026-09-04T12:27:35.688Z",
      "location_count": 23,
      "location_summary": "Huntsville, Alabama • Anaheim, California • San Diego, California + 19 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Tarzana",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01230541"
    },
    {
      "nct_id": "NCT00282607",
      "title": "A Study of DA-8159 in Subjects With Erectile Dysfunction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Erectile Dysfunction"
      ],
      "interventions": [
        {
          "name": "DA-8159",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Dong-A PharmTech Co., Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": "75 Years",
        "sex": "MALE",
        "summary": "19 Years to 75 Years · Male only"
      },
      "enrollment_count": 300,
      "start_date": "2005-05",
      "completion_date": "2006-06",
      "has_results": false,
      "last_update_posted_date": "2007-02-28",
      "last_synced_at": "2026-09-04T12:27:35.688Z",
      "location_count": 15,
      "location_summary": "Huntsville, Alabama • Beverly Hills, California • Laguna Woods, California + 12 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "Laguna Woods",
          "state": "California"
        },
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "Tarzana",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00282607"
    },
    {
      "nct_id": "NCT05918211",
      "title": "Fontan Udenafil Exercise Longitudinal Assessment Trial - 2",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Single Ventricle Heart Disease"
      ],
      "interventions": [
        {
          "name": "Udenafil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mezzion Pharma Co. Ltd",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "12 Years to 18 Years"
      },
      "enrollment_count": 436,
      "start_date": "2023-10-30",
      "completion_date": "2025-10-28",
      "has_results": false,
      "last_update_posted_date": "2025-10-28",
      "last_synced_at": "2026-09-04T12:27:35.688Z",
      "location_count": 37,
      "location_summary": "Phoenix, Arizona • Little Rock, Arkansas • Los Angeles, California + 32 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05918211"
    },
    {
      "nct_id": "NCT01065012",
      "title": "Treatment of Erectile Dysfunction - Long Term Safety and Efficacy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Erectile Dysfunction"
      ],
      "interventions": [
        {
          "name": "Udenafil 50 mg",
          "type": "DRUG"
        },
        {
          "name": "Udenafil 100 mg",
          "type": "DRUG"
        },
        {
          "name": "Udenafil 150 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo Matching 50 mg Udenafil",
          "type": "DRUG"
        },
        {
          "name": "Placebo Matching 100 mg Udenafil",
          "type": "DRUG"
        },
        {
          "name": "Placebo Matching 150 mg Udenafil",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Warner Chilcott",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "19 Years and older · Male only"
      },
      "enrollment_count": 1027,
      "start_date": "2010-01",
      "completion_date": "2011-02",
      "has_results": false,
      "last_update_posted_date": "2015-04-20",
      "last_synced_at": "2026-09-04T12:27:35.688Z",
      "location_count": 72,
      "location_summary": "Birmingham, Alabama • Homewood, Alabama • Huntsville, Alabama + 65 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Homewood",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01065012"
    },
    {
      "nct_id": "NCT01037244",
      "title": "Treatment of Erectile Dysfunction I",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Erectile Dysfunction"
      ],
      "interventions": [
        {
          "name": "Udenafil",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Warner Chilcott",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "19 Years and older · Male only"
      },
      "enrollment_count": 618,
      "start_date": "2009-09",
      "completion_date": "2010-03",
      "has_results": true,
      "last_update_posted_date": "2011-12-22",
      "last_synced_at": "2026-09-04T12:27:35.688Z",
      "location_count": 36,
      "location_summary": "Birmingham, Alabama • Homewood, Alabama • Mesa, Arizona + 32 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Homewood",
          "state": "Alabama"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01037244"
    }
  ]
}