{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Fesoterodine+8+mg",
    "query": {
      "intervention": "Fesoterodine 8 mg"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 15,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Fesoterodine+8+mg&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-27T11:07:30.642Z",
  "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": "NCT00425100",
      "title": "A Clinical Trial To Assess Fesoterodine On Treatment Satisfaction And Symptom Improvement In Overactive Bladder Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Overactive Bladder"
      ],
      "interventions": [
        {
          "name": "fesoterodine fumarate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 516,
      "start_date": "2007-01",
      "completion_date": "2007-10",
      "has_results": true,
      "last_update_posted_date": "2018-12-05",
      "last_synced_at": "2026-09-27T11:07:30.642Z",
      "location_count": 24,
      "location_summary": "Homewood, Alabama • Huntsville, Alabama • La Mesa, California + 20 more",
      "locations": [
        {
          "city": "Homewood",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "La Mesa",
          "state": "California"
        },
        {
          "city": "Orangevale",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00425100"
    },
    {
      "nct_id": "NCT00928070",
      "title": "A Study Of Efficacy And Safety Of Fesoterodine In Vulnerable Elderly Subjects With Overactive Bladder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Overactive Bladder"
      ],
      "interventions": [
        {
          "name": "Fesoterodine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 566,
      "start_date": "2009-09",
      "completion_date": "2011-09",
      "has_results": true,
      "last_update_posted_date": "2013-01-17",
      "last_synced_at": "2026-09-27T11:07:30.642Z",
      "location_count": 125,
      "location_summary": "Birmingham, Alabama • Montgomery, Alabama • Green Valley, Arizona + 106 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Montgomery",
          "state": "Alabama"
        },
        {
          "city": "Green Valley",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00928070"
    },
    {
      "nct_id": "NCT00832650",
      "title": "Multiple Dose Study To Investigate The Effects Of Fesoterodine And Solifenacin On Gastrointestinal Transit",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "fesoterodine fumarate",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        },
        {
          "name": "solifenacin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 55 Years · Female only"
      },
      "enrollment_count": 60,
      "start_date": "2009-04",
      "completion_date": "2009-12",
      "has_results": true,
      "last_update_posted_date": "2010-12-24",
      "last_synced_at": "2026-09-27T11:07:30.642Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00832650"
    },
    {
      "nct_id": "NCT01786967",
      "title": "Understanding the Response to Fesoterodine Through Genetic Evaluation in the Elderly (URGE)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Urge Urinary Incontinence"
      ],
      "interventions": [
        {
          "name": "Fesoterodine Fumarate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "50 Years and older · Female only"
      },
      "enrollment_count": 61,
      "start_date": "2012-09",
      "completion_date": "2017-12-31",
      "has_results": true,
      "last_update_posted_date": "2020-03-18",
      "last_synced_at": "2026-09-27T11:07:30.642Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01786967"
    },
    {
      "nct_id": "NCT01557244",
      "title": "A Study To Find Out How Fesoterodine Works In Children Aged 6 To 17 Years With Bladder Overactivity Caused By A Neurological Condition",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Urinary Bladder, Neurogenic"
      ],
      "interventions": [
        {
          "name": "Fesoterodine PR 4 mg",
          "type": "DRUG"
        },
        {
          "name": "Fesoterodine PR 8 mg",
          "type": "DRUG"
        },
        {
          "name": "Oxybutynin",
          "type": "DRUG"
        },
        {
          "name": "Fesoterodine PR",
          "type": "DRUG"
        },
        {
          "name": "Fesoterodine BIC 2 mg",
          "type": "DRUG"
        },
        {
          "name": "Fesoterodine BIC 4 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "6 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "6 Years to 17 Years"
      },
      "enrollment_count": 181,
      "start_date": "2012-07-02",
      "completion_date": "2020-02-13",
      "has_results": true,
      "last_update_posted_date": "2021-02-02",
      "last_synced_at": "2026-09-27T11:07:30.642Z",
      "location_count": 18,
      "location_summary": "Tucson, Arizona • Orange, California • Atlanta, Georgia + 8 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01557244"
    },
    {
      "nct_id": "NCT00911235",
      "title": "The Effect Of Fluconazole On Pharmacokinetics Of Fesoterodine In Healthy Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Overactive Bladder With Symptoms of Frequency, Urgency, and Urge Urinary Incontinence"
      ],
      "interventions": [
        {
          "name": "Fesoterodine",
          "type": "DRUG"
        },
        {
          "name": "fesoterodine plus fluconazole",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 28,
      "start_date": "2009-05",
      "completion_date": "2009-07",
      "has_results": false,
      "last_update_posted_date": "2011-06-01",
      "last_synced_at": "2026-09-27T11:07:30.642Z",
      "location_count": 1,
      "location_summary": "New Haven, Connecticut",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00911235"
    },
    {
      "nct_id": "NCT01302054",
      "title": "A Clinical Study in Patients With Overactive Bladder With Leakage of Urine, to Find Out if the Medicine, Fesoterodine, Works in Those Patients Who Did Not Have Enough Response to the Medicine, Tolterodine.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Urinary Bladder, Overactive"
      ],
      "interventions": [
        {
          "name": "Fesoterodine 8 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 990,
      "start_date": "2011-05",
      "completion_date": "2012-05",
      "has_results": true,
      "last_update_posted_date": "2018-12-04",
      "last_synced_at": "2026-09-27T11:07:30.642Z",
      "location_count": 109,
      "location_summary": "Birmingham, Alabama • Fairhope, Alabama • Chandler, Arizona + 80 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Fairhope",
          "state": "Alabama"
        },
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Green Valley",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01302054"
    },
    {
      "nct_id": "NCT00713921",
      "title": "Neuropathic Investigation and Anticholinergic Treatment of Bladder Dysfunction in Diabetes and Stroke Patients",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Urinary Incontinence",
        "Bladder Dysfunction"
      ],
      "interventions": [
        {
          "name": "Fesoterodine Oral Product",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Saint Thomas Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "85 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 85 Years · Female only"
      },
      "enrollment_count": 0,
      "start_date": "2009-09-15",
      "completion_date": "2014-01-17",
      "has_results": false,
      "last_update_posted_date": "2018-09-11",
      "last_synced_at": "2026-09-27T11:07:30.642Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00713921"
    },
    {
      "nct_id": "NCT00911937",
      "title": "A Trial To Evaluate The Efficacy And Safety Of Fesoterodine In Patients With Symptoms Of Overactive Bladder Including Nocturnal Urinary Urgency",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Overactive Bladder"
      ],
      "interventions": [
        {
          "name": "Fesoterodine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 963,
      "start_date": "2009-08",
      "completion_date": "2011-09",
      "has_results": true,
      "last_update_posted_date": "2018-12-04",
      "last_synced_at": "2026-09-27T11:07:30.642Z",
      "location_count": 112,
      "location_summary": "Mobile, Alabama • Goodyear, Arizona • Litchfield Park, Arizona + 99 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Goodyear",
          "state": "Arizona"
        },
        {
          "city": "Litchfield Park",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00911937"
    },
    {
      "nct_id": "NCT00857896",
      "title": "Study Of Fesoterodine In Pediatric Overactive Bladder Patients Aged 8-17 Years",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Overactive Bladder",
        "Neurogenic Detrusor Overactivity"
      ],
      "interventions": [
        {
          "name": "Fesoterodine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "8 Years to 17 Years"
      },
      "enrollment_count": 21,
      "start_date": "2009-03",
      "completion_date": "2010-12",
      "has_results": true,
      "last_update_posted_date": "2011-11-24",
      "last_synced_at": "2026-09-27T11:07:30.642Z",
      "location_count": 9,
      "location_summary": "Little Rock, Arkansas • Long Beach, California • Overland Park, Kansas + 5 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Shreveport",
          "state": "Louisiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00857896"
    }
  ]
}