{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=4mg+fesoterodine",
    "query": {
      "intervention": "4mg fesoterodine"
    },
    "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": "2026-09-25T14:53:50.017Z",
  "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": "NCT00536484",
      "title": "Fesoterodine Flexible Dose Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "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": 896,
      "start_date": "2007-08",
      "completion_date": "2008-03",
      "has_results": true,
      "last_update_posted_date": "2009-09-15",
      "last_synced_at": "2026-09-25T14:53:50.017Z",
      "location_count": 95,
      "location_summary": "Mobile, Alabama • Chandler, Arizona • Peoria, Arizona + 81 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Peoria",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Rancho Cordova",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00536484"
    },
    {
      "nct_id": "NCT00605319",
      "title": "An Open Label Study to Measure Efficacy of Fesoterodine (Toviaz) Post Surgery for Benign Prostatic Hyperplasia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Bladder Outlet Obstruction"
      ],
      "interventions": [
        {
          "name": "Toviaz (Fesoterodine)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "99 Years",
        "sex": "MALE",
        "summary": "40 Years to 99 Years · Male only"
      },
      "enrollment_count": 17,
      "start_date": "2010-01",
      "completion_date": "2013-01",
      "has_results": true,
      "last_update_posted_date": "2018-04-10",
      "last_synced_at": "2026-09-25T14:53:50.017Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00605319"
    },
    {
      "nct_id": "NCT01605617",
      "title": "Trial of Percutaneous Tibial Nerve Stimulation (PTNS) Versus PTNS and Fesoterodine Fumarate",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Overactive Bladder"
      ],
      "interventions": [
        {
          "name": "Fesoterodine fumarate",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Percutaneous Tibial Nerve Stimulation (PTNS)",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 4,
      "start_date": "2012-06",
      "completion_date": "2013-03",
      "has_results": true,
      "last_update_posted_date": "2014-02-05",
      "last_synced_at": "2026-09-25T14:53:50.017Z",
      "location_count": 1,
      "location_summary": "Phoenix, Arizona",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01605617"
    },
    {
      "nct_id": "NCT01661166",
      "title": "A Study of Effects of Fesoterodine in Men at High Risk for Overactive Bladder/Detrusor Overactivity Post Robotic-Assisted Lap. Prostatectomy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Prostate Adenocarcinoma"
      ],
      "interventions": [
        {
          "name": "Fesoterodine",
          "type": "DRUG"
        },
        {
          "name": "Placebo oral tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Abramson Cancer Center at Penn Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "90 Years",
        "sex": "MALE",
        "summary": "30 Years to 90 Years · Male only"
      },
      "enrollment_count": 3,
      "start_date": "2012-01",
      "completion_date": "2013-04-15",
      "has_results": false,
      "last_update_posted_date": "2020-04-28",
      "last_synced_at": "2026-09-25T14:53:50.017Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01661166"
    },
    {
      "nct_id": "NCT01613170",
      "title": "Premarin Versus Toviaz for Treatment of Overactive Bladder",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Overactive Bladder"
      ],
      "interventions": [
        {
          "name": "Toviaz",
          "type": "DRUG"
        },
        {
          "name": "Premarin",
          "type": "DRUG"
        },
        {
          "name": "Placebo cream",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The Cleveland Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "100 Years",
        "sex": "FEMALE",
        "summary": "30 Years to 100 Years · Female only"
      },
      "enrollment_count": 90,
      "start_date": "2012-04",
      "completion_date": "2018-12",
      "has_results": false,
      "last_update_posted_date": "2017-04-20",
      "last_synced_at": "2026-09-25T14:53:50.017Z",
      "location_count": 1,
      "location_summary": "Weston, Florida",
      "locations": [
        {
          "city": "Weston",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01613170"
    },
    {
      "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": "2026-09-25T14:53:50.017Z",
      "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": "NCT01161472",
      "title": "A Study to Assess the Cognitive Effects of Fesoterodine in Elderly Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "4mg fesoterodine",
          "type": "DRUG"
        },
        {
          "name": "8mg fesoterodine",
          "type": "DRUG"
        },
        {
          "name": "alprazolam 1mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "65 Years to 85 Years"
      },
      "enrollment_count": 20,
      "start_date": "2010-07",
      "completion_date": "2010-09",
      "has_results": true,
      "last_update_posted_date": "2012-06-28",
      "last_synced_at": "2026-09-25T14:53:50.017Z",
      "location_count": 2,
      "location_summary": "Overland Park, Kansas",
      "locations": [
        {
          "city": "Overland Park",
          "state": "Kansas"
        },
        {
          "city": "Overland Park",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01161472"
    },
    {
      "nct_id": "NCT01302067",
      "title": "A 12 Week Study to Confirm the Effectiveness of 8mg of Fesoterodine Compared to 4mg of Fesoterodine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Overactive Bladder"
      ],
      "interventions": [
        {
          "name": "Fesoterodine 8mg",
          "type": "DRUG"
        },
        {
          "name": "Fesoterodine 4mg",
          "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": 2012,
      "start_date": "2011-05",
      "completion_date": "2012-11",
      "has_results": true,
      "last_update_posted_date": "2014-03-26",
      "last_synced_at": "2026-09-25T14:53:50.017Z",
      "location_count": 165,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 130 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01302067"
    },
    {
      "nct_id": "NCT01925456",
      "title": "Validation of Instruments for Pragmatic Clinical Trials for Overactive Bladder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Overactive Bladder"
      ],
      "interventions": [
        {
          "name": "Toviaz",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 75,
      "start_date": "2011-05",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2014-12-10",
      "last_synced_at": "2026-09-25T14:53:50.017Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01925456"
    },
    {
      "nct_id": "NCT00546637",
      "title": "Fesoterodine \"add-on\" Male Overactive Bladder Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Overactive Bladder Syndrome"
      ],
      "interventions": [
        {
          "name": "Fesoterodine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "40 Years and older · Male only"
      },
      "enrollment_count": 947,
      "start_date": "2007-11",
      "completion_date": "2009-02",
      "has_results": true,
      "last_update_posted_date": "2011-02-18",
      "last_synced_at": "2026-09-25T14:53:50.017Z",
      "location_count": 62,
      "location_summary": "Birmingham, Alabama • Gilbert, Arizona • Litchfield Park, Arizona + 53 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Litchfield Park",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00546637"
    }
  ]
}