{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ondansetron+Placebo",
    "query": {
      "intervention": "Ondansetron Placebo"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 80,
    "total_pages": 8,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ondansetron+Placebo&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-22T02:17:33.456Z",
  "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": "NCT00387556",
      "title": "Ondansetron Reduce Vomiting Associated With Ketamine PSA",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Conscious Sedation"
      ],
      "interventions": [
        {
          "name": "Ondansetron",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "1 Year to 21 Years"
      },
      "enrollment_count": 268,
      "start_date": "2002-12",
      "completion_date": "2006-12",
      "has_results": false,
      "last_update_posted_date": "2013-05-13",
      "last_synced_at": "2026-09-22T02:17:33.456Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00387556"
    },
    {
      "nct_id": "NCT00738621",
      "title": "Combination Antiemetic Regimen for Prevention of PONV in Breast Surgery Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Postoperative Nausea and Vomiting"
      ],
      "interventions": [
        {
          "name": "Aprepitant, Dexamethasone, Ondansetron",
          "type": "DRUG"
        },
        {
          "name": "Aprepitant, Dexamethasone, Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Scott and White Hospital & Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 65 Years · Female only"
      },
      "enrollment_count": 100,
      "start_date": "2008-07",
      "completion_date": "2010-08",
      "has_results": false,
      "last_update_posted_date": "2013-12-19",
      "last_synced_at": "2026-09-22T02:17:33.456Z",
      "location_count": 1,
      "location_summary": "Temple, Texas",
      "locations": [
        {
          "city": "Temple",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00738621"
    },
    {
      "nct_id": "NCT01346267",
      "title": "Acupressure in Controlling Nausea in Young Patients Receiving Highly Emetogenic Chemotherapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Central Nervous System Tumor, Pediatric",
        "Chemotherapy-induced Nausea and Vomiting",
        "Unspecified Childhood Solid Tumor, Protocol Specific"
      ],
      "interventions": [
        {
          "name": "Real Acupressure Band",
          "type": "PROCEDURE"
        },
        {
          "name": "Placebo Acupressure Band",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of South Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "4 Years to 18 Years"
      },
      "enrollment_count": 187,
      "start_date": "2011-05",
      "completion_date": "2016-05",
      "has_results": true,
      "last_update_posted_date": "2021-08-18",
      "last_synced_at": "2026-09-22T02:17:33.456Z",
      "location_count": 24,
      "location_summary": "Long Beach, California • Los Angeles, California • Hartford, Connecticut + 20 more",
      "locations": [
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Hartford",
          "state": "Connecticut"
        },
        {
          "city": "Wilmington",
          "state": "Delaware"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01346267"
    },
    {
      "nct_id": "NCT00878228",
      "title": "Antiemetic Prophylaxis for Postdischarge Nausea and Vomiting After Hip Arthroscopy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Nausea and Vomiting, Postoperative"
      ],
      "interventions": [
        {
          "name": "Ondansetron",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hospital for Special Surgery, New York",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 98,
      "start_date": "2009-04",
      "completion_date": "2010-02",
      "has_results": true,
      "last_update_posted_date": "2013-01-31",
      "last_synced_at": "2026-09-22T02:17:33.456Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00878228"
    },
    {
      "nct_id": "NCT00678457",
      "title": "Ondansetron With Olanzapine for the Treatment of Alcohol Dependence: A Preliminary Clinical Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Alcohol Dependence"
      ],
      "interventions": [
        {
          "name": "Ondansetron",
          "type": "DRUG"
        },
        {
          "name": "Olanzapine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Virginia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2007-01",
      "completion_date": "2008-05",
      "has_results": false,
      "last_update_posted_date": "2009-01-30",
      "last_synced_at": "2026-09-22T02:17:33.456Z",
      "location_count": 2,
      "location_summary": "Charlottesville, Virginia • Richmond, Virginia",
      "locations": [
        {
          "city": "Charlottesville",
          "state": "Virginia"
        },
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00678457"
    },
    {
      "nct_id": "NCT00104403",
      "title": "Study Of Prevention of Chemo-Induced Nausea and Vomiting Caused By Moderately Emetogenic Chemotherapy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Nausea and Vomiting, Chemotherapy-Induced",
        "Chemotherapy-Induced Nausea and Vomiting"
      ],
      "interventions": [
        {
          "name": "GW679769",
          "type": "DRUG"
        },
        {
          "name": "Dexamethasone",
          "type": "DRUG"
        },
        {
          "name": "Ondansetron Hydrochloride",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 722,
      "start_date": "2004-12",
      "completion_date": "2006-01",
      "has_results": false,
      "last_update_posted_date": "2015-04-16",
      "last_synced_at": "2026-09-22T02:17:33.456Z",
      "location_count": 47,
      "location_summary": "Birmingham, Alabama • Corona, California • Greenbrae, California + 43 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Corona",
          "state": "California"
        },
        {
          "city": "Greenbrae",
          "state": "California"
        },
        {
          "city": "Loma Linda",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00104403"
    },
    {
      "nct_id": "NCT01868425",
      "title": "ACL Repair and Multimodal Analgesia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Pain"
      ],
      "interventions": [
        {
          "name": "multimodal:acetaminophen, gabapentin, ketamine, bupivacaine",
          "type": "DRUG"
        },
        {
          "name": "placebo pills and injectables",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 112,
      "start_date": "2013-04",
      "completion_date": "2017-12",
      "has_results": true,
      "last_update_posted_date": "2020-03-30",
      "last_synced_at": "2026-09-22T02:17:33.456Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01868425"
    },
    {
      "nct_id": "NCT04557189",
      "title": "A Study of TAK-951 to Stop Adults Getting Nausea and Vomiting After Planned Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Postoperative Nausea and Vomiting (PONV)"
      ],
      "interventions": [
        {
          "name": "TAK-951",
          "type": "DRUG"
        },
        {
          "name": "Ondansetron",
          "type": "DRUG"
        },
        {
          "name": "Ondansetron Placebo",
          "type": "DRUG"
        },
        {
          "name": "TAK-951 Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Takeda",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 89,
      "start_date": "2020-10-20",
      "completion_date": "2022-03-21",
      "has_results": true,
      "last_update_posted_date": "2023-04-21",
      "last_synced_at": "2026-09-22T02:17:33.456Z",
      "location_count": 7,
      "location_summary": "Sheffield, Alabama • Pasadena, California • Tamarac, Florida + 4 more",
      "locations": [
        {
          "city": "Sheffield",
          "state": "Alabama"
        },
        {
          "city": "Pasadena",
          "state": "California"
        },
        {
          "city": "Tamarac",
          "state": "Florida"
        },
        {
          "city": "Stony Brook",
          "state": "New York"
        },
        {
          "city": "Bellaire",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04557189"
    },
    {
      "nct_id": "NCT02542384",
      "title": "A Study Evaluating the Overall Pain Relief and Safety of Intravenous (IV) CR845 in Patients Undergoing Abdominal Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Post Abdominal Surgery Pain"
      ],
      "interventions": [
        {
          "name": "CR845 IV 1 mcg/kg",
          "type": "DRUG"
        },
        {
          "name": "CR845 IV 0.5 mcg/kg",
          "type": "DRUG"
        },
        {
          "name": "Placebo IV",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cara Therapeutics, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 451,
      "start_date": "2015-09",
      "completion_date": "2018-06",
      "has_results": false,
      "last_update_posted_date": "2019-05-31",
      "last_synced_at": "2026-09-22T02:17:33.456Z",
      "location_count": 23,
      "location_summary": "Sheffield, Alabama • New Haven, Connecticut • Bradenton, Florida + 20 more",
      "locations": [
        {
          "city": "Sheffield",
          "state": "Alabama"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Bradenton",
          "state": "Florida"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "Maitland",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02542384"
    },
    {
      "nct_id": "NCT02354703",
      "title": "Pharmacogenetic Study of Ondansetron in Alcohol Use Disorder",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Alcohol Use Disorder"
      ],
      "interventions": [
        {
          "name": "Ondansetron",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Maryland, Baltimore",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 293,
      "start_date": "2015-08",
      "completion_date": "2020-03-31",
      "has_results": true,
      "last_update_posted_date": "2022-01-14",
      "last_synced_at": "2026-09-22T02:17:33.456Z",
      "location_count": 3,
      "location_summary": "Baltimore, Maryland • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02354703"
    }
  ]
}