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Showing 1–24 of 57 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Naltrexone Pill Clear all
Not listed Phase 4 Interventional

Bridging ED to Outpatient AUD Therapy With Naltrexone

NCT05228418
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
Naltrexone Pill
Drug
Lead sponsor
Albert Einstein Healthcare Network
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 7, 2022 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 2 Interventional

Trial of Naltrexone and Dextromethorphan for Gulf War Illness

NCT02206490
View directory record Official record
Conditions
Gulf War Illness
Interventions
naltrexone, Dextromethorphan
Drug
Lead sponsor
East Carolina University
Other
Eligibility
18 Years to 100 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Greenville, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 2, 2016 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 2 Interventional Results available

The Effects of Naltrexone on Active Crohn's Disease

NCT00663117
View directory record Official record
Conditions
Inflammation, Crohn's Disease
Interventions
Naltrexone-HCl, Placebo
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 1, 2018 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 4 Interventional Results available

Treatment for Alcoholism and Post-Traumatic Stress Disorder (Naltrexone)

NCT00006489
View directory record Official record
Conditions
Alcoholism, Alcohol Dependence, Post-Traumatic Stress Disorder
Interventions
Cognitive-Behavioral Therapy, Naltrexone, Placebo
Behavioral · Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
165 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 20, 2017 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Clinical Trial to Reduce Drinking in Women With HIV

NCT01625091
View directory record Official record
Conditions
HIV Infection
Interventions
Naltrexone, Placebo
Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older · Female only
Enrollment
194 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
2
States / cities
Coral Gables, Florida • Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jul 9, 2018 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 2 Interventional Results available

Effects of Naltrexone on Nicotine Reinforcement

NCT00270231
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Naltrexone, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 9, 2013 · Synced Sep 2, 2026, 4:06 AM EDT
Recruiting Phase 3 Interventional

Emergency Department-Initiated Medications for Alcohol Use Disorder

NCT05827159
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
Naltrexone Pill, Naltrexone Injection, Brief Negotiation Interview, Gabapentin Pill
Drug · Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 80 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Sep 2, 2026, 4:06 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Examining Mu Opioid Mechanisms of Ketamine's Rapid Effects in OCD (MKET2)

NCT05940324
View directory record Official record
Conditions
Obsessive-Compulsive Disorder
Interventions
Ketamine, Naltrexone Pill, Placebo pill
Drug · Other
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Apr 23, 2026 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 2 Interventional Results available

Effectiveness of Lofexidine to Prevent Stress-Related Opiate Relapse During Naltrexone Treatment - 1

NCT00142909
View directory record Official record
Conditions
Opioid-Related Disorders
Interventions
Lofexidine, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2009
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 29, 2015 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Neuropharmacological Basis of Social Connection: The Role of Opioids

NCT01672723
View directory record Official record
Conditions
Psychology, Social
Interventions
Naltrexone
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 35 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jan 13, 2016 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 4 Interventional Results available

Managing Alcoholism in People Who Do Not Respond to Naltrexone

NCT00115037
View directory record Official record
Conditions
Alcoholism
Interventions
Naltrexone, placebo, Medication Management (MM), Combined Behavioral Intervention (CBI), Telephone Counseling
Drug · Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
302 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 17, 2019 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

An fMRI Study of Opioid-related Changes in Neural Activity

NCT02818036
View directory record Official record
Conditions
Social Acceptance
Interventions
Naltrexone, Placebo
Drug
Lead sponsor
Tristen Inagaki
Other
Eligibility
18 Years to 35 Years
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 22, 2019 · Synced Sep 2, 2026, 4:06 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Understanding How Opioids Affect the Experiential and Neural Signatures of Social Experiences

NCT05007561
View directory record Official record
Conditions
Naltrexone, Placebo
Interventions
Naltrexone Hydrochloride, Placebo
Drug
Lead sponsor
San Diego State University
Other
Eligibility
18 Years to 25 Years
Enrollment
210 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Behavioral and Pharmacologic Treatment of Binge Eating and Obesity: Acute Treatment

NCT03045341
View directory record Official record
Conditions
Binge-eating Disorder, Obesity
Interventions
NB medication (Naltrexone Bupropion combination), Behavioral Weight Loss (BWL) counseling, Placebo
Drug · Behavioral · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 70 Years
Enrollment
136 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 7, 2023 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Control of Cognition (Naltrexone, Methylphenidate, and ADHD Study (NMAS))

NCT01993108
View directory record Official record
Conditions
Healthy, Attention Deficit Hyperactivity Disorder
Interventions
Methylphenidate, Naltrexone, Placebo
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 35 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 17, 2018 · Synced Sep 2, 2026, 4:06 AM EDT
Terminated Phase 2 Interventional Results available

Study of Immunomodulation Using Naltrexone and Ketamine for COVID-19

NCT04365985
View directory record Official record
Conditions
COVID-19, Acute Respiratory Distress Syndrome, Severe Acute Respiratory Syndrome (SARS), Coronavirus Infections
Interventions
Naltrexone, Ketamine, Placebo
Drug · Other
Lead sponsor
Corewell Health East
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 25, 2022 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Naltrexone for At-Risk and Problem Drinking in Smoking Cessation Treatment

NCT00938886
View directory record Official record
Conditions
Hazardous Drinking, Cigarette Smoking
Interventions
Naltrexone, Placebo
Drug
Lead sponsor
Brown University
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated May 14, 2017 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 3 Interventional

Naltrexone in Two Models of Psychosocial Treatments for Cocaine and Alcohol Dependence

NCT00167232
View directory record Official record
Conditions
Cocaine Dependence, Alcoholism
Interventions
Naltrexone
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
164 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2003
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 27, 2018 · Synced Sep 2, 2026, 4:06 AM EDT
Terminated Phase 2 Interventional Results available

Naltrexone RCT for Treatment-Emergent Fatigue in Patients Receiving Radiation Therapy for Breast Cancer

NCT02137252
View directory record Official record
Conditions
Invasive Breast Cancer (Stage I-III), Ductal Carcinoma in Situ, Lobular Carcinoma in Situ, Lobular Carcinoma, Fatigue Related to Cancer Treatment
Interventions
Naltrexone, Sugar Pill
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 15, 2021 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 3 Interventional

Combined Pharmacotherapies for Alcoholism

NCT00768508
View directory record Official record
Conditions
Alcoholism
Interventions
Ondansetron 4 ug/kg b.i.d. + Cognitive Behavioral Therapy, Naltrexone 50 mg/day + Cognitive Behavioral Therapy, Ondansetron 4 ug/kg b.i.d.+ Naltrexone 50 mg/day + Cognitive Behavioral Therapy, Placebo + Cognitive Behavioral Therapy
Drug · Other
Lead sponsor
Bankole Johnson
Other
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
2
States / cities
Charlottesville, Virginia • Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 14, 2013 · Synced Sep 2, 2026, 4:06 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Food Reward in Native American Women

NCT01623440
View directory record Official record
Conditions
Obesity
Interventions
Placebo and fMRI, Naltrexone and fMRI
Combination Product
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
69 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 11, 2019 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 4 Interventional Results available

Extended-Release vs. Oral Naltrexone Alcohol Treatment in Primary Care

NCT01893827
View directory record Official record
Conditions
Alcohol Dependence
Interventions
XR-NTX (Extended-Release Naltrexone), Oral Naltrexone (O-NTX)
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
237 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 15, 2020 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 2 Interventional Results available

The Efficacy of Low Dose Naltrexone Therapy in Children With Crohn's Disease

NCT00715117
View directory record Official record
Conditions
Crohn's Disease
Interventions
Naltrexone, Placebo, sugar pill
Drug · Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
6 Years to 17 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 5, 2018 · Synced Sep 2, 2026, 4:06 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Pharmacological and Behavioral Treatments After Bariatric Surgery: Maintenance Treatment (Stage 2a)

NCT04605081
View directory record Official record
Conditions
Loss-of-Control Eating, Obesity/Overweight
Interventions
Naltrexone and Bupropion (NB) medication, Placebo
Drug · Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 70 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 2, 2026, 4:06 AM EDT