{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Risperidone+plus+Placebo",
    "query": {
      "intervention": "Risperidone plus Placebo"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 60,
    "total_pages": 6,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Risperidone+plus+Placebo&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-16T23:46:16.473Z",
  "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": "NCT00563706",
      "title": "Study Evaluating Vabicaserin in Subjects With Schizophrenia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Schizophrenia"
      ],
      "interventions": [
        {
          "name": "vabicaserin",
          "type": "DRUG"
        },
        {
          "name": "risperidone",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "MALE",
        "summary": "18 Years to 65 Years · Male only"
      },
      "enrollment_count": 199,
      "start_date": "2007-12",
      "completion_date": "2008-06",
      "has_results": true,
      "last_update_posted_date": "2014-03-20",
      "last_synced_at": "2026-09-16T23:46:16.473Z",
      "location_count": 32,
      "location_summary": "Little Rock, Arkansas • Cerritos, California • Escondido, California + 27 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Cerritos",
          "state": "California"
        },
        {
          "city": "Escondido",
          "state": "California"
        },
        {
          "city": "Garden Grove",
          "state": "California"
        },
        {
          "city": "Glendale",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00563706"
    },
    {
      "nct_id": "NCT00235352",
      "title": "Trial of Ampakine Added to Clozapine, Olanzapine or Risperidone in Patients With Schizophrenia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Schizophrenia"
      ],
      "interventions": [
        {
          "name": "CX516 (Ampakine)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "North Suffolk Mental Health Association",
      "sponsor_class": "OTHER",
      "healthy_volunteers": null,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": null,
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 105,
      "start_date": "2002-02",
      "completion_date": "2007-02",
      "has_results": false,
      "last_update_posted_date": "2009-02-26",
      "last_synced_at": "2026-09-16T23:46:16.473Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00235352"
    },
    {
      "nct_id": "NCT03893825",
      "title": "A Study to Test if TV-46000 is Safe for Maintenance Treatment of Schizophrenia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Schizophrenia"
      ],
      "interventions": [
        {
          "name": "TV-46000",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Teva Branded Pharmaceutical Products R&D, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "13 Years to 65 Years"
      },
      "enrollment_count": 336,
      "start_date": "2019-04-17",
      "completion_date": "2021-12-02",
      "has_results": true,
      "last_update_posted_date": "2022-12-07",
      "last_synced_at": "2026-09-16T23:46:16.473Z",
      "location_count": 67,
      "location_summary": "Phoenix, Arizona • Scottsdale, Arizona • Tucson, Arizona + 57 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Rogers",
          "state": "Arkansas"
        },
        {
          "city": "Anaheim",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03893825"
    },
    {
      "nct_id": "NCT01272765",
      "title": "Anti-psychotic Medication (Stable Dose) Weight Loss Study",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "IHBG-10",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Avera McKennan Hospital & University Health Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2012-03",
      "completion_date": "2013-01",
      "has_results": false,
      "last_update_posted_date": "2012-06-01",
      "last_synced_at": "2026-09-16T23:46:16.473Z",
      "location_count": 1,
      "location_summary": "Sioux Falls, South Dakota",
      "locations": [
        {
          "city": "Sioux Falls",
          "state": "South Dakota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01272765"
    },
    {
      "nct_id": "NCT02538081",
      "title": "Nicotinic Receptors and Schizophrenia",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Schizophrenia"
      ],
      "interventions": [
        {
          "name": "Risperidone plus Placebo",
          "type": "DRUG"
        },
        {
          "name": "Risperidone plus DMXB-A",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 0,
      "start_date": "2015-08",
      "completion_date": "2016-08",
      "has_results": false,
      "last_update_posted_date": "2017-05-30",
      "last_synced_at": "2026-09-16T23:46:16.473Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02538081"
    },
    {
      "nct_id": "NCT00099983",
      "title": "Risperidone Treatment for Military Service Related Chronic Post Traumatic Stress Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Stress Disorders",
        "Post-Traumatic"
      ],
      "interventions": [
        {
          "name": "Risperidone",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "US Department of Veterans Affairs",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 296,
      "start_date": "2006-10",
      "completion_date": "2011-01",
      "has_results": true,
      "last_update_posted_date": "2014-08-22",
      "last_synced_at": "2026-09-16T23:46:16.473Z",
      "location_count": 20,
      "location_summary": "Tuscaloosa, Alabama • San Diego, California • San Francisco, California + 17 more",
      "locations": [
        {
          "city": "Tuscaloosa",
          "state": "Alabama"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "West Los Angeles",
          "state": "California"
        },
        {
          "city": "West Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00099983"
    },
    {
      "nct_id": "NCT00221403",
      "title": "Placebo Controlled Trial of Valproate and Risperidone in Young Children With Bipolar Disorders",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Bipolar Disorder"
      ],
      "interventions": [
        {
          "name": "Risperidone oral solution",
          "type": "DRUG"
        },
        {
          "name": "Valproate Oral Solution",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Children's Hospital Medical Center, Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "7 Years",
        "sex": "ALL",
        "summary": "3 Years to 7 Years"
      },
      "enrollment_count": 46,
      "start_date": "2004-09",
      "completion_date": "2011-05",
      "has_results": true,
      "last_update_posted_date": "2020-10-20",
      "last_synced_at": "2026-09-16T23:46:16.473Z",
      "location_count": 2,
      "location_summary": "Cincinnati, Ohio • Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00221403"
    },
    {
      "nct_id": "NCT01272752",
      "title": "Anti-psychotic Medication (New Use) Weight Loss Study",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Obesity"
      ],
      "interventions": [
        {
          "name": "IHBG-10",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Avera McKennan Hospital & University Health Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2013-04",
      "completion_date": "2013-12",
      "has_results": false,
      "last_update_posted_date": "2012-06-01",
      "last_synced_at": "2026-09-16T23:46:16.473Z",
      "location_count": 1,
      "location_summary": "Sioux Falls, South Dakota",
      "locations": [
        {
          "city": "Sioux Falls",
          "state": "South Dakota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01272752"
    },
    {
      "nct_id": "NCT03837860",
      "title": "Reducing the Abuse of Opioids in Drug Users",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Opioid Abuse, Unspecified",
        "Opioid Dependence"
      ],
      "interventions": [
        {
          "name": "Oxycodone/Placebo",
          "type": "DRUG"
        },
        {
          "name": "Oxycodone/Risperidone",
          "type": "DRUG"
        },
        {
          "name": "Oxycodone/Ziprasidone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The University of Texas Health Science Center at San Antonio",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "21 Years to 65 Years"
      },
      "enrollment_count": 3,
      "start_date": "2019-04-01",
      "completion_date": "2022-01-21",
      "has_results": false,
      "last_update_posted_date": "2022-02-15",
      "last_synced_at": "2026-09-16T23:46:16.473Z",
      "location_count": 1,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03837860"
    },
    {
      "nct_id": "NCT01376076",
      "title": "Effects of Cariprazine on Cardiac Repolarization in Patients With Schizophrenia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Schizophrenia"
      ],
      "interventions": [
        {
          "name": "Cariprazine",
          "type": "DRUG"
        },
        {
          "name": "Risperidone/Moxifloxacin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Forest Laboratories",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 129,
      "start_date": "2011-06",
      "completion_date": "2012-02",
      "has_results": false,
      "last_update_posted_date": "2012-02-08",
      "last_synced_at": "2026-09-16T23:46:16.473Z",
      "location_count": 4,
      "location_summary": "Glendale, California • Long Beach, California • Willingboro, New Jersey + 1 more",
      "locations": [
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Willingboro",
          "state": "New Jersey"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01376076"
    }
  ]
}