{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+to+solifenacin",
    "query": {
      "intervention": "Placebo to solifenacin"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 20,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+to+solifenacin&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-26T14:42:08.980Z",
  "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": "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": "2026-09-26T14:42:08.980Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00832650"
    },
    {
      "nct_id": "NCT00454896",
      "title": "A Multicenter VESIcare® Efficacy and Safety Study for the Treatment of Urgency Associated With Overactive Bladder (OAB)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Urinary Bladder, Overactive"
      ],
      "interventions": [
        {
          "name": "VESIcare®",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Astellas Pharma Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 739,
      "start_date": "2004-05",
      "completion_date": "2005-09",
      "has_results": false,
      "last_update_posted_date": "2014-09-18",
      "last_synced_at": "2026-09-26T14:42:08.980Z",
      "location_count": 65,
      "location_summary": "Phoenix, Arizona • Scottsdale, Arizona • Atherton, California + 60 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Atherton",
          "state": "California"
        },
        {
          "city": "Carmichael",
          "state": "California"
        },
        {
          "city": "Escondido",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00454896"
    },
    {
      "nct_id": "NCT01767519",
      "title": "A Study Evaluating the Efficacy and Safety of BOTOX® or Solifenacin in Patients With Overactive Bladder and Urinary Incontinence",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Overactive Bladder",
        "Urinary Incontinence"
      ],
      "interventions": [
        {
          "name": "BOTOX®",
          "type": "BIOLOGICAL"
        },
        {
          "name": "solifenacin",
          "type": "DRUG"
        },
        {
          "name": "Botox placebo (normal saline)",
          "type": "DRUG"
        },
        {
          "name": "solifenacin placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Allergan",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 356,
      "start_date": "2013-03-01",
      "completion_date": "2015-03-18",
      "has_results": true,
      "last_update_posted_date": "2019-04-23",
      "last_synced_at": "2026-09-26T14:42:08.980Z",
      "location_count": 1,
      "location_summary": "Newport Beach, California",
      "locations": [
        {
          "city": "Newport Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01767519"
    },
    {
      "nct_id": "NCT01018264",
      "title": "Solifenacin Succinate (VESIcare) for the Treatment of Overactive Bladder in Parkinson's Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Overactive Bladder in Parkinson's Disease"
      ],
      "interventions": [
        {
          "name": "solifenacin succinate (VESIcare)",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of South Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 23,
      "start_date": "2010-01",
      "completion_date": "2014-08",
      "has_results": true,
      "last_update_posted_date": "2021-11-09",
      "last_synced_at": "2026-09-26T14:42:08.980Z",
      "location_count": 3,
      "location_summary": "Miami, Florida • Tampa, Florida • Atlanta, Georgia",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01018264"
    },
    {
      "nct_id": "NCT00573508",
      "title": "Study of VESIcare® In Overactive Bladder (OAB) Subjects to Evaluate Symptom Bother and Health Related Quality of Life",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Urinary Bladder, Overactive"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Solifenacin Succinate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Astellas Pharma Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 768,
      "start_date": "2007-08",
      "completion_date": "2008-07",
      "has_results": true,
      "last_update_posted_date": "2010-10-05",
      "last_synced_at": "2026-09-26T14:42:08.980Z",
      "location_count": 59,
      "location_summary": "Montgomery, Alabama • Phoenix, Arizona • Tucson, Arizona + 53 more",
      "locations": [
        {
          "city": "Montgomery",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Buena Park",
          "state": "California"
        },
        {
          "city": "Carmichael",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00573508"
    },
    {
      "nct_id": "NCT01764893",
      "title": "Use of Percutaneous Tibial Nerve Stimulation With Solifenacin or Placebo to Treat Refractory Overactive Bladder",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Overactive Bladder"
      ],
      "interventions": [
        {
          "name": "PTNS plus solifenacin",
          "type": "OTHER"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Bay State Clinical Trials, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 8,
      "start_date": "2013-01",
      "completion_date": "2014-04",
      "has_results": false,
      "last_update_posted_date": "2014-05-23",
      "last_synced_at": "2026-09-26T14:42:08.980Z",
      "location_count": 1,
      "location_summary": "Watertown, Massachusetts",
      "locations": [
        {
          "city": "Watertown",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01764893"
    },
    {
      "nct_id": "NCT00333112",
      "title": "A Study to Evaluate Solifenacin Succinate in Combination With Tamsulosin for the Treatment of Residual Overactive Bladder Symptoms (OAB) in Men.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Urinary Incontinence"
      ],
      "interventions": [
        {
          "name": "solifenacin succinate",
          "type": "DRUG"
        },
        {
          "name": "tamsulosin",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Astellas Pharma Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "45 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "45 Years and older · Male only"
      },
      "enrollment_count": 398,
      "start_date": "2006-05",
      "completion_date": "2007-01",
      "has_results": false,
      "last_update_posted_date": "2014-09-18",
      "last_synced_at": "2026-09-26T14:42:08.980Z",
      "location_count": 74,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Tuscon, Arizona + 67 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tuscon",
          "state": "Arizona"
        },
        {
          "city": "Atherton",
          "state": "California"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00333112"
    },
    {
      "nct_id": "NCT01908829",
      "title": "A Trial Comparing Combination Treatment (Solifenacin Plus Mirabegron) With One Treatment Alone (Solifenacin)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Urinary Bladder Diseases",
        "Urinary Bladder Overactive",
        "Urologic Diseases"
      ],
      "interventions": [
        {
          "name": "mirabegron 25 mg",
          "type": "DRUG"
        },
        {
          "name": "mirabegron 50 mg",
          "type": "DRUG"
        },
        {
          "name": "solifenacin 5 mg",
          "type": "DRUG"
        },
        {
          "name": "solifenacin 10 mg",
          "type": "DRUG"
        },
        {
          "name": "mirabegron 25 mg matching placebo",
          "type": "DRUG"
        },
        {
          "name": "mirabegron 50 mg matching placebo",
          "type": "DRUG"
        },
        {
          "name": "solifenacin 5 mg matching placebo",
          "type": "DRUG"
        },
        {
          "name": "solifenacin 10 mg matching placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Astellas Pharma Europe Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2174,
      "start_date": "2013-07-10",
      "completion_date": "2014-11-25",
      "has_results": true,
      "last_update_posted_date": "2024-10-31",
      "last_synced_at": "2026-09-26T14:42:08.980Z",
      "location_count": 36,
      "location_summary": "Tucson, Arizona • Buena Park, California • Los Angeles, California + 31 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Buena Park",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Valley Village",
          "state": "California"
        },
        {
          "city": "Brooksville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01908829"
    },
    {
      "nct_id": "NCT03817931",
      "title": "Higher Neural Changes Following Anticholinergic, Beta 3 Agonist, or Placebo in Patients With Overactive Bladder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Overactive Bladder",
        "Dementia",
        "Lower Urinary Tract Symptoms",
        "Incontinence, Urge"
      ],
      "interventions": [
        {
          "name": "Anticholinergic",
          "type": "DRUG"
        },
        {
          "name": "Beta-3 Agonists, Adrenergic",
          "type": "DRUG"
        },
        {
          "name": "Functional magnetic resonance imaging (fMRI)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Rey Auditory Verbal Learning Test (RAVLT)",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Baylor Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 90 Years · Female only"
      },
      "enrollment_count": 12,
      "start_date": "2019-08-05",
      "completion_date": "2022-02-26",
      "has_results": false,
      "last_update_posted_date": "2024-02-02",
      "last_synced_at": "2026-09-26T14:42:08.980Z",
      "location_count": 2,
      "location_summary": "Houston, Texas • Temple, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Temple",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03817931"
    },
    {
      "nct_id": "NCT01371994",
      "title": "A Study to Assess Efficacy and Safety With Solifenacin Succinate to Improve Urinary Continence After Robotic Assisted Radical Prostatectomy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Urinary Incontinence"
      ],
      "interventions": [
        {
          "name": "solifenacin succinate",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Astellas Pharma Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 640,
      "start_date": "2011-08-02",
      "completion_date": "2013-10-21",
      "has_results": true,
      "last_update_posted_date": "2024-11-21",
      "last_synced_at": "2026-09-26T14:42:08.980Z",
      "location_count": 58,
      "location_summary": "Homewood, Alabama • Anchorage, Alaska • Tucson, Arizona + 53 more",
      "locations": [
        {
          "city": "Homewood",
          "state": "Alabama"
        },
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01371994"
    }
  ]
}