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ClinicalTrials.gov public records Last synced Sep 22, 2026, 5:42 AM EDT

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Showing 25–48 of 24 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 22, 2026, 5:42 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Targeted Naltrexone to Support Individuals Participating in Dry January

NCT07132177
View directory record Official record
Conditions
Alcohol Misuse
Interventions
Naltrexone (oral tablets)
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 22, 2026, 5:42 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 22, 2026, 5:42 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetics Study of ALO-02 and OxyContin

NCT01557257
View directory record Official record
Conditions
Management of Moderate to Severe Pain
Interventions
ALO-02, Naltrexone block, OxyContin
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 27, 2012 · Synced Sep 22, 2026, 5:42 AM EDT
Completed Phase 2 Interventional Results available

N-Acetyl Cysteine Plus Naltrexone in Methamphetamine Dependence

NCT00332605
View directory record Official record
Conditions
Methamphetamine Dependence
Interventions
Naltrexone plus N-Acetyl Cysteine, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 65 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 22, 2022 · Synced Sep 22, 2026, 5:42 AM EDT
Completed Not applicable Interventional Results available

Effect of Naltrexone on Counterregulatory Mechanisms in Hypoglycemia

NCT01462227
View directory record Official record
Conditions
Hypoglycemia
Interventions
Naltrexone High Dose, Naltrexone Low Dose
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 17, 2016 · Synced Sep 22, 2026, 5:42 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to Evaluate the Effect of Naltrexone and Bupropion Extended-Release Combination on Cardiac Repolarization in Healthy Participants

NCT02735603
View directory record Official record
Conditions
Heart Repolarization
Interventions
Naltrexone HCl/bupropion HCl, Placebo, Moxifloxacin
Drug · Other
Lead sponsor
Orexigen Therapeutics, Inc
Industry
Eligibility
18 Years to 55 Years
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 31, 2016 · Synced Sep 22, 2026, 5:42 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 22, 2026, 5:42 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Randomized, Two-way, Crossover Study to Estimate the Relative Bioavailability of a Controlled-release Formulation of Oxycodone (40 mg) With Sequestered Naltrexone Compared With Immediate-release Oxycodone Tablets (20 mg) in Healthy Volunteers

NCT01677065
View directory record Official record
Conditions
Healthy
Interventions
Oxycodone controlled-release test formulation, Immediate-release reference drug
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 27, 2018 · Synced Sep 22, 2026, 5:42 AM EDT
Enrolling by invitation No phase listed Observational

A Study to Evaluate the Safety of Exposure to Wegovy During Pregnancy

NCT05503927
View directory record Official record
Conditions
Pregnancy, Obesity, Overweight
Interventions
No Intervention
Other
Lead sponsor
Novo Nordisk A/S
Industry
Eligibility
15 Years to 50 Years · Female only
Enrollment
2,701 participants
Timeline
2020 – 2027
U.S. locations
2
States / cities
Ann Arbor, Michigan • Princeton, New Jersey
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Sep 22, 2026, 5:42 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Naltrexone and Varenicline: Weight Gain and Tolerability in Cigarette Smokers

NCT00502216
View directory record Official record
Conditions
Smoking, Nicotine Dependence
Interventions
Naltrexone, Varenicline
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 75 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 16, 2018 · Synced Sep 22, 2026, 5:42 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 22, 2026, 5:42 AM EDT
Completed 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
217 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Sep 22, 2026, 5:42 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 22, 2026, 5:42 AM EDT
Terminated Phase 2 Interventional Results available

Low-dose Naltrexone for Bladder Pain Syndrome

NCT04450316
View directory record Official record
Conditions
Bladder Pain Syndrome, Interstitial Cystitis
Interventions
Naltrexone, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Sep 22, 2026, 5:42 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Better Than Study: Targeting Heavy Alcohol Use With Naltrexone Among Men Who Have Sex With Men (MSM)

NCT02330419
View directory record Official record
Conditions
Binge Drinking, HIV
Interventions
Placebo, Naltrexone, Medical Management (MM) counseling for alcohol use:, Urinalysis for novel alcohol biochemical markers:, Behavioral survey measurements:, Dried Blood Spot (DSB) Testing for Phosphatidylethanol, Ecological Momentary Assessment
Drug · Behavioral · Diagnostic Test
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 70 Years · Male only
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2021
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 19, 2025 · Synced Sep 22, 2026, 5:42 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Assessment of the Effect of Naltrexone on Lofexidine Single Dose Pharmacokinetics in Healthy Subjects

NCT02446002
View directory record Official record
Conditions
Healthy
Interventions
Lofexidine + Naltrexone
Drug
Lead sponsor
USWM, LLC (dba US WorldMeds)
Industry
Eligibility
18 Years to 60 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Oct 25, 2017 · Synced Sep 22, 2026, 5:42 AM EDT
Completed Phase 1 Interventional

Augmenting Zyprexa With Naltrexone to Ameliorate Metabolic Side-Effects

NCT00567034
View directory record Official record
Conditions
Schizophrenia, Psychotic Disorders
Interventions
naltrexone, placebo
Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
21 Years to 55 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 24, 2013 · Synced Sep 22, 2026, 5:42 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 22, 2026, 5:42 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 22, 2026, 5:42 AM EDT
Recruiting Phase 2Phase 3 Interventional

Efficacy of Buprenorphine and XR-Naltrexone Combination for Relapse Prevention in Opioid Use Disorder

NCT05011266
View directory record Official record
Conditions
Opioid-use Disorder
Interventions
Buprenorphine/naloxone, Placebo
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 65 Years
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
2
States / cities
Rockville, Maryland • New York, New York
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Sep 22, 2026, 5:42 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Medication Maintenance Therapy in Community Pharmacy Settings

NCT03766893
View directory record Official record
Conditions
Opioid-use Disorder
Interventions
Buprenorphine / Naloxone Oral Product, injectable naltrexone, Pharmacy maintenance addiction care
Drug · Other
Lead sponsor
Lifespan
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jul 31, 2019 · Synced Sep 22, 2026, 5:42 AM EDT
Completed Phase 4 Interventional

Naltrexone Maintenance Treatment of Alcoholism

NCT00000450
View directory record Official record
Conditions
Alcoholism
Interventions
Naltrexone Tablet, Matched Placebo Tablet
Drug
Lead sponsor
The Scripps Research Institute
Other
Eligibility
18 Years to 65 Years
Enrollment
159 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1997 – 2002
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Apr 19, 2017 · Synced Sep 22, 2026, 5:42 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 22, 2026, 5:42 AM EDT