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Showing 1–24 of 48 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Ondansetron plus placebo Clear all
Completed Phase 2 Interventional

A Study To Evaluate An NK-1 Antiemetic For The Prevention Of Post Operative Nausea And Vomiting

NCT00108095
View directory record Official record
Conditions
Postoperative Nausea and Vomiting, Nausea and Vomiting, Postoperative
Interventions
intravenous ondansetron
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 55 Years · Female only
Enrollment
701 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
30
States / cities
Montgomery, Alabama • Phoenix, Arizona • Arcadia, California + 24 more
Source: ClinicalTrials.gov public record
Updated Jan 19, 2017 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effects of Ondansetron on Brain Function

NCT02460341
View directory record Official record
Conditions
Brain Function, Healthy Adults
Interventions
ondansetron, placebo
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years to 60 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 10, 2017 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Not applicable Interventional Results available

Aprepitant in Preventing Nausea and Vomiting in Patients Who Are Undergoing a Stem Cell Transplant

NCT00248547
View directory record Official record
Conditions
Cancer
Interventions
aprepitant, dexamethasone, ondansetron, placebo
Drug
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated May 8, 2017 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 4 Interventional Results available

Ondansetron for Bipolar Disorder and Alcohol Use Disorders

NCT02082678
View directory record Official record
Conditions
Bipolar Disorder, Alcohol Use Disorder, Dual Diagnosis
Interventions
Ondansetron, Placebo
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 70 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 23, 2021 · Synced Sep 23, 2026, 3:30 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

Evaluation of TAK-058 and Ondansetron on P50 Auditory Gating in Participants With Stable Schizophrenia

NCT02614586
View directory record Official record
Conditions
Schizophrenia
Interventions
TAK-058, Ondansetron, TAK-058 Placebo, Ondansetron Placebo
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 60 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 30, 2017 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 2 Interventional

Study Of Prevention of Chemo-Induced Nausea and Vomiting Caused By Moderately Emetogenic Chemotherapy

NCT00104403
View directory record Official record
Conditions
Nausea and Vomiting, Chemotherapy-Induced, Chemotherapy-Induced Nausea and Vomiting
Interventions
GW679769, Dexamethasone, Ondansetron Hydrochloride
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
722 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
47
States / cities
Birmingham, Alabama • Corona, California • Greenbrae, California + 43 more
Source: ClinicalTrials.gov public record
Updated Apr 15, 2015 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Not applicable Interventional Results available

5HT3 Antagonists to Treat Opioid Withdrawal and to Prevent the Progression of Physical Dependence

NCT01549652
View directory record Official record
Conditions
Opioid Withdrawal, Physical Dependence
Interventions
Ondansetron, Placebo, Morphine, Naloxone 0.4 mg/70 kg, Naloxone 0.8 mg/70 kg
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 60 Years
Enrollment
133 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jan 6, 2019 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 3 Interventional

Dronabinol Versus Standard Ondansetron Antiemetic Therapy in Preventing Delayed-Onset Chemotherapy-Induced Nausea and Vomiting

NCT00642512
View directory record Official record
Conditions
Chemotherapy Induced Nausea and Vomiting
Interventions
dronabinol, ondansetron, dronabinol/ondansetron, placebo
Drug
Lead sponsor
Solvay Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
43
States / cities
Tucson, Arizona • Anaheim, California • Fountain Valley, California + 37 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2008 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 3 Interventional Results available

A Prospective, Multicenter, Study of APF530 (Granisetron) SC for Prevention of CINV in Patients Receiving HEC

NCT02106494
View directory record Official record
Conditions
Chemotherapy-induced Nausea and Vomiting
Interventions
APF530, Ondansetron, Ondansetron placebo, APF530 placebo, Fosaprepitant, Dexamethasone
Drug
Lead sponsor
Heron Therapeutics
Industry
Eligibility
18 Years to 87 Years
Enrollment
942 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
7
States / cities
Phoenix, Arizona • Downey, California • Riverside, California + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 2Phase 3 Interventional

A Study Evaluating the Overall Pain Relief and Safety of Intravenous (IV) CR845 in Patients Undergoing Abdominal Surgery

NCT02542384
View directory record Official record
Conditions
Post Abdominal Surgery Pain
Interventions
CR845 IV 1 mcg/kg, CR845 IV 0.5 mcg/kg, Placebo IV
Drug
Lead sponsor
Cara Therapeutics, Inc.
Industry
Eligibility
21 Years and older
Enrollment
451 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
23
States / cities
Sheffield, Alabama • New Haven, Connecticut • Bradenton, Florida + 20 more
Source: ClinicalTrials.gov public record
Updated May 30, 2019 · Synced Sep 23, 2026, 3:30 AM EDT
Withdrawn Not applicable Interventional

Mag Con: Efficacy of Oral Mag. in Acute Concussion in Adolescents

NCT05065528
View directory record Official record
Conditions
Concussion, Mild, Traumatic Brain Injury, Mild
Interventions
Magnesium, Placebo
Dietary Supplement · Drug
Lead sponsor
Corewell Health South
Other
Eligibility
12 Years to 18 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Saint Joseph, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 28, 2024 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Functional Magnetic Resonance Imaging of Opioid Withdrawal in Healthy Human Volunteers

NCT01006707
View directory record Official record
Conditions
Substance-Related Disorders
Interventions
Ondansetron
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 35 Years · Male only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Nov 16, 2017 · Synced Sep 23, 2026, 3:30 AM EDT
Terminated Phase 2 Interventional

Ondansetron for the Treatment of Heavy Drinking Among Emerging Adults

NCT00890149
View directory record Official record
Conditions
Alcohol Abuse, Alcoholism
Interventions
Ondansetron, Placebo, BASICS Plus
Drug · Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 25 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Columbia, Maryland
Source: ClinicalTrials.gov public record
Updated May 25, 2023 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 3 Interventional Results available

Antiemetic Therapy With or Without Olanzapine in Preventing Chemotherapy-Induced Nausea and Vomiting in Patients With Cancer Receiving Highly Emetogenic Chemotherapy

NCT02116530
View directory record Official record
Conditions
Hematopoietic/Lymphoid Cancer, Nausea and Vomiting, Unspecified Adult Solid Tumor, Protocol Specific
Interventions
Olanzapine, Chemotherapy (cisplatin or cyclophosphamide and doxorubicin), Antiemetic treatment (ondansetron or granisetron or palonosetron; plus dexamethasone; plus fosaprepitant or aprepitant), Placebo
Drug · Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
401 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
177
States / cities
Anchorage, Alaska • Burbank, California • Dublin, California + 109 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2025 · Synced Sep 23, 2026, 3:30 AM EDT
Withdrawn Phase 3 Interventional

A Study of IV Casopitant for the Prevention of Nausea and Vomiting Caused By Cisplatin-Based Highly Emetogenic Chemotherapy

NCT00891761
View directory record Official record
Conditions
Cancer, Chemotherapy-Induced Nausea and Vomiting, Nausea and Vomiting, Solid Tumor Cancer
Interventions
Dexamethasone, IV casopitant (placebo), IV casopitant (active), Ondansetron
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
2
States / cities
Tampa, Florida • Robbinsdale, Minnesota
Source: ClinicalTrials.gov public record
Updated Apr 16, 2015 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 2 Interventional Results available

Can Ondansetron Prevent Neonatal Abstinence Syndrome (NAS) in Babies Born to Narcotic-dependent Women

NCT01965704
View directory record Official record
Conditions
Narcotic Addiction, Neonatal Abstinence Syndrome
Interventions
Ondansetron, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
Up to 45 Years
Enrollment
196 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
8
States / cities
San Francisco, California • San Jose, California • Stanford, California + 5 more
Source: ClinicalTrials.gov public record
Updated Jun 6, 2022 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Ondansetron Reduce Vomiting Associated With Ketamine PSA

NCT00387556
View directory record Official record
Conditions
Conscious Sedation
Interventions
Ondansetron
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
1 Year to 21 Years
Enrollment
268 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2006
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated May 12, 2013 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 2 Interventional Results available

Trial of Mesna to Prevent Doxorubicin-induced Plasma Protein Oxidation and Tumor Necrosis Factor Alpha (TNF-α) Release

NCT01205503
View directory record Official record
Conditions
Breast Cancer, Non-Hodgkin's Lymphoma
Interventions
Mesna, Saline, Doxorubicin, Cyclophosphamide
Drug
Lead sponsor
Mara Chambers
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Feb 23, 2016 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 2 Interventional Results available

Analgesic Effect of IV Acetaminophen in Tonsillectomies

NCT01691690
View directory record Official record
Conditions
Adenotonsillitis, Tonsillitis
Interventions
Acetaminophen (paracetamol), Normal Saline Flush, Midazolam, Sevoflurane, Nitrous Oxide/Oxygen, Propofol, Morphine, Ondansetron, Dexamethasone
Drug
Lead sponsor
Nationwide Children's Hospital
Other
Eligibility
2 Years to 9 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 5, 2017 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 3 Interventional Results available

Low Dose Oral Methotrexate in Pediatric Crohn's Disease Patients Initiating Anti-Tumor Necrosis Factor (Anti-TNF) Therapy

NCT02772965
View directory record Official record
Conditions
Pediatric Crohn's Disease
Interventions
Methotrexate, Sugar pill (placebo)
Drug · Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
Up to 20 Years
Enrollment
306 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
32
States / cities
Birmingham, Alabama • Alto, California • New Haven, Connecticut + 27 more
Source: ClinicalTrials.gov public record
Updated Apr 11, 2023 · Synced Sep 23, 2026, 3:30 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Pgp Transporter and CNS Biodistribution of Ondansetron in Healthy Volunteers

NCT03809234
View directory record Official record
Conditions
Neuropathic Pain
Interventions
Ondansetron 8mg with Saline & Tariquidar, Ondansetron 16mg with Saline & Tariquidar
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 50 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 6, 2022 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Aprepitant for PONV Prophylaxis in Outpatient Plastic Surgery

NCT00659945
View directory record Official record
Conditions
Postoperative Nausea and Vomiting
Interventions
Aprepitant plus Ondansetron, Ondansetron plus placebo
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 5, 2013 · Synced Sep 23, 2026, 3:30 AM EDT
Completed Phase 4 Interventional Results available

Isopropyl Alcohol vs Ondansetron for Nausea in the Emergency Department

NCT02760069
View directory record Official record
Conditions
Nausea
Interventions
Inhaled isopropyl alcohol, Oral ondansetron, Inhaled normal saline, Oral placebo
Drug
Lead sponsor
Brooke Army Medical Center
Federal
Eligibility
18 Years and older
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jul 22, 2020 · Synced Sep 23, 2026, 3:30 AM EDT
Recruiting Phase 2Phase 3 Interventional Accepts healthy volunteers

Inhaled Isopropyl Alcohol for Treatment of Nausea

NCT05418244
View directory record Official record
Conditions
Vomiting, Nausea, Children, Only
Interventions
Inhaled Isopropyl Alcohol, Oral Ondansetron, Inhaled Placebo
Other · Drug
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
7 Years to 17 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Sep 23, 2026, 3:30 AM EDT