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Showing 1–24 of 59 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Naltrexone tablet Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Exploratory Bioavailability of Fentanyl Sublingual Spray Under Fasting Conditions

NCT02138396
View directory record Official record
Conditions
Bioavailability
Interventions
Fentanyl Sublingual Spray (FSS), Fentanyl Citrate Injection (FCI), Naltrexone
Drug
Lead sponsor
INSYS Therapeutics Inc
Industry
Eligibility
18 Years to 55 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Dec 11, 2014 · Synced Sep 2, 2026, 10:03 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Naltrexone for Prolonged Grief Disorder

NCT06140420
View directory record Official record
Conditions
Naltrexone HCl 50 MG Oral Tablet, Placebo
Interventions
Naltrexone Oral Product, Placebo
Drug
Lead sponsor
Texas Tech University
Other
Eligibility
18 Years to 120 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Sep 2, 2026, 10:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioequivalency Study of Buprenorphine Hydrochloride 8 mg Tablet Under Fasted Conditions

NCT00992095
View directory record Official record
Conditions
Opioid-Related Disorders
Interventions
buprenorphine hydrochloride
Drug
Lead sponsor
Roxane Laboratories
Industry
Eligibility
18 Years to 45 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jan 22, 2018 · Synced Sep 2, 2026, 10:03 AM EDT
Completed Phase 4 Interventional

Tobacco Dependence in Alcoholism Treatment (Nicotine Patch/Naltrexone)

NCT00000437
View directory record Official record
Conditions
Alcoholism, Smoking
Interventions
Naltrexone Tablet and Nicotine Patch, Naltrexone Tablet and Placebo Patch, Placebo Tablet and Nicotine Patch, Placebo Tablet and Placebo Patch
Drug
Lead sponsor
The Scripps Research Institute
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2005
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Apr 19, 2017 · Synced Sep 2, 2026, 10:03 AM EDT
Completed Phase 3 Interventional Results available

Individualized Obesity Pharmacotherapy

NCT03374956
View directory record Official record
Conditions
Obesity
Interventions
Phentermine-Topiramate, Liraglutide, Naltrexone/bupropion, Phentermine
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 75 Years
Enrollment
193 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 17, 2023 · Synced Sep 2, 2026, 10:03 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Sex Differences in Trauma, Inflammation and Brain Function and the Implications for Treatment Efficacy in Alcohol Use Disorder

NCT06426303
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
Naltrexone
Drug
Lead sponsor
Milky Kohno
Other
Eligibility
18 Years to 60 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Jul 17, 2024 · Synced Sep 2, 2026, 10:03 AM EDT
Completed Phase 2 Interventional Results available

Combining Pregabalin (LYRICA®) With Lofexidine (LUCEMYRATM) to Treat OPIOID Withdrawal

NCT04218240
View directory record Official record
Conditions
Opioid Withdrawal
Interventions
Pregabalin 200 MG capsules, Placebo oral tablet, Lofexidine 0.18Mg Tab
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 70 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
3
States / cities
Baltimore, Maryland • New York, New York • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 2, 2026, 10:03 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of PF614 Compared to OxyContin® in Healthy Volunteers (PF614-101)

NCT02454712
View directory record Official record
Conditions
Healthy
Interventions
PF614, Oxycodone extended-release, Naltrexone Hydrochloride
Drug
Lead sponsor
Ensysce Biosciences
Industry
Eligibility
18 Years to 50 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 1, 2024 · Synced Sep 2, 2026, 10:03 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Bioequivalency Study of Oxymorphone Hydrochloride 10 mg Tablets Under Fasted Conditions

NCT01210638
View directory record Official record
Conditions
Pain
Interventions
Oxymorphone
Drug
Lead sponsor
Roxane Laboratories
Industry
Eligibility
18 Years to 45 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 22, 2018 · Synced Sep 2, 2026, 10:03 AM EDT
Completed Phase 2 Interventional

Pilot Study Into LDN and NAD+ for Treatment of Patients With Post-COVID-19 Syndrome

NCT04604704
View directory record Official record
Conditions
Covid19, Long COVID-19, Post-COVID-19 Syndrome
Interventions
Naltrexone, NAD+
Drug · Dietary Supplement
Lead sponsor
AgelessRx
Industry
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 24, 2023 · Synced Sep 2, 2026, 10:03 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Naltrexone and Hypoglycemia in Type 1 Diabetes

NCT01053078
View directory record Official record
Conditions
Type 1 Diabetes, Hypoglycemia Unawareness
Interventions
Naltrexone, Placebo
Drug · Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 65 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Sep 2, 2026, 10:03 AM EDT
Terminated Phase 4 Interventional Results available

Pilot Study of Depot NTX in Homeless Veterans

NCT01155869
View directory record Official record
Conditions
Alcohol Dependence
Interventions
Depot naltrexone, Oral Naltrexone
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 64 Years
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jul 16, 2014 · Synced Sep 2, 2026, 10:03 AM EDT
Withdrawn Early Phase 1 Interventional

Relapse Prevention in Stimulant Use Disorder

NCT04553263
View directory record Official record
Conditions
Stimulant Use, Relapse, Cognitive Function, ADHD
Interventions
Contrave 8Mg-90Mg Extended-Release Tablet, Bupropion
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 21, 2023 · Synced Sep 2, 2026, 10:03 AM EDT
Completed Phase 2 Interventional

Study to Evaluate the Subjective Effects of PTI-801 in Non-Physically Dependent Subjects With a History of Drug Abuse

NCT00734461
View directory record Official record
Conditions
Opioid-Related Disorders
Interventions
oxycodone and naltrexone
Drug
Lead sponsor
Pain Therapeutics
Industry
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 1, 2016 · Synced Sep 2, 2026, 10:03 AM EDT
Terminated Phase 2 Interventional Results available

Anti-retroviral Therapy, Medications for Opioid Use Disorder, Opioids and HIV Infection - Study 1

NCT04480554
View directory record Official record
Conditions
Opioid-use Disorder, HIV-1-infection, Immune Activation, Inflammation, Methadone, Buprenorphine, Naltrexone, Antiretroviral Treatment
Interventions
Methadone, Buprenorphine/naloxone, XR-Naltrexone
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 65 Years
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Sep 2, 2026, 10:03 AM EDT
Terminated Phase 4 Interventional Results available

Naltrexone/Bupropion Cardiovascular Outcomes Study

NCT02638129
View directory record Official record
Conditions
Obesity, Cardiovascular Diseases
Interventions
Naltrexone HCl/Bupropion HCl ER, Placebo
Drug
Lead sponsor
Orexigen Therapeutics, Inc
Industry
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
139
States / cities
Alexander City, Alabama • Auburn, Alabama • Birmingham, Alabama + 136 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2017 · Synced Sep 2, 2026, 10:03 AM EDT
Completed No phase listed Observational Results available

Real-World Evidence on the Cardiovascular Safety of CONTRAVE® in the United States (U.S.)

NCT06090461
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
Currax Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
31,889 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2022
U.S. locations
1
States / cities
Brentwood, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 24, 2025 · Synced Sep 2, 2026, 10:03 AM EDT
Completed Phase 3 Interventional

A Study to Evaluate Withdrawal Effects Following Dosing of Oxycodone/Naltrexone in Methadone-Maintained Subjects

NCT02391571
View directory record Official record
Conditions
Withdrawal Symptoms
Interventions
Oxycodone/Naltrexone Capsules, Oxycodone, Placebo
Drug
Lead sponsor
Elite Laboratories, Inc
Industry
Eligibility
18 Years to 55 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 9, 2016 · Synced Sep 2, 2026, 10:03 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess the Pharmacokinetics of the Hydrocodone Extended-Release Tablet (CEP-33237) in Subjects With Normal Renal Function and Subjects With Varying Degrees of Renal Impairment

NCT01319266
View directory record Official record
Conditions
Renal Impairment
Interventions
Hydrocodone Bitartrate extended-release tablet
Drug
Lead sponsor
Cephalon
Industry
Eligibility
18 Years and older
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
4
States / cities
Miami, Florida • Orlando, Florida • Minneapolis, Minnesota + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2012 · Synced Sep 2, 2026, 10:03 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

IC PaIN Trial: Interstitial Cystitis Pain Improvement With Naltrexone

NCT04313972
View directory record Official record
Conditions
Interstitial Cystitis, Painful Bladder Syndrome, Bladder Pain Syndrome, Low Dose Naltrexone, Low-dose Naltrexone, Naltrexone
Interventions
low-dose naltrexone, Placebo oral tablet
Drug
Lead sponsor
Endeavor Health
Other
Eligibility
18 Years to 110 Years · Female only
Enrollment
3 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Skokie, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 6, 2025 · Synced Sep 2, 2026, 10:03 AM EDT
Withdrawn Phase 4 Interventional

Comparison of Buprenorphine/Naloxone With Naltrexone in Opioid Dependent Adolescents

NCT01015066
View directory record Official record
Conditions
Opiate Addiction
Interventions
Buprenorphine/naloxone, Naltrexone
Drug
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
16 Years to 25 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 9, 2014 · Synced Sep 2, 2026, 10:03 AM EDT
Completed Phase 3 Interventional Results available

Accelerated Development of Additive Pharmacotherapy Treatment (ADAPT-2) for Methamphetamine Use Disorder

NCT03078075
View directory record Official record
Conditions
Methamphetamine Use Disorder
Interventions
Naltrexone: Vivitrol®, Placebo (PLB) Injectable, Bupropion: Wellbutrin XL®, Placebo (PLB) Oral
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
403 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
8
States / cities
Los Angeles, California • San Francisco, California • Minneapolis, Minnesota + 5 more
Source: ClinicalTrials.gov public record
Updated May 2, 2021 · Synced Sep 2, 2026, 10:03 AM EDT
Withdrawn Phase 4 Interventional

Efficacy of Naltrexone HCl/Bupropion HCl Extended Release Versus Placebo for Treatment of Weight Regain in Participants Post Bariatric Surgery

NCT02616315
View directory record Official record
Conditions
Weight Regain Post Bariatric Surgery
Interventions
Naltrexone HCl/Bupropion HCl Placebo, Naltrexone HCl/Bupropion HCl
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
2
States / cities
Chicago, Illinois • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 7, 2016 · Synced Sep 2, 2026, 10:03 AM EDT
Not yet recruiting Phase 2 Interventional

Combination Therapy for Alcohol Use Disorder

NCT07249554
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
Placebo, Glucagon-Like Peptide-1 Agonist (GLP-1), Naltrexone (oral tablets)
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 65 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Havre de Grace, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Sep 2, 2026, 10:03 AM EDT