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Showing 1–24 of 1,417 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 1 Interventional Accepts healthy volunteers

A Food Effect Study to Evaluate the Relative Bioavailability of Nalbuphine Extended-Release Tablets (NAL ER) in Healthy Participants

NCT07487740
View directory record Official record
Conditions
Healthy Participants
Interventions
NAL ER
Drug
Lead sponsor
Trevi Therapeutics
Industry
Eligibility
18 Years to 60 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Phase 4 Interventional Results available

Antitussive Effect of a Naturally Flavored Syrup Containing Diphenhydramine, Compared With Dextromethorphan and Placebo

NCT02062710
View directory record Official record
Conditions
Cough Reflex Sensitivity
Interventions
diphenhydramine/phenylephrine/cocoa; dextromethorophan; placebo, diphenhydramine/phenylephrine/cocoa; placebo; dextromethorphan, dextromethorphan; diphenhydramine/phenylephrine/cocoa; placebo, dextromethorophan; placebo; diphenhydramine/phenylephrine/cocoa, placebo; diphenhydramine/phenylephrine/cocoa; dextromethorphan, placebo; dextromethorphan; diphenhydramine/phenylephrine/cocoa
Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Feb 27, 2018 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Phase 2 Interventional Results available

Clinical Neuropharmacology of Pain in Spinal Cord Injury- Dextromethorphan/Lidocaine Combination Clinical Trial

NCT02218203
View directory record Official record
Conditions
Central Neuropathic Pain, Allodynia, Spinal Cord Injury
Interventions
Dextromethorphan, Lidocaine, Placebo (Dextromethorphan), Placebo (Lidocaine)
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 7, 2025 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Phase 3 Interventional

Suboxone: (Buprenorphine/Naloxone) Comparison of Two Taper Schedules - 1

NCT00078117
View directory record Official record
Conditions
Opioid-Related Disorders
Interventions
Buprenorphine
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
15 Years to 99 Years
Enrollment
516 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
11
States / cities
Denver, Colorado • Hartford, Connecticut • Waterbury, Connecticut + 7 more
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Not applicable Interventional Results available

Adjunctive Transcranial Stimulation to Reduce Impulsivity in Opiate Use Disorder

NCT05049460
View directory record Official record
Conditions
Opioid-use Disorder, Tobacco Use Disorder
Interventions
Theta Burst Stimulation, Sham TMS
Device
Lead sponsor
Gopalkumar Rakesh
Other
Eligibility
18 Years to 60 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Oct 21, 2025 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Phase 2 Interventional Results available

Naproxen Sodium/Acetaminophen Proof of Concept Dosing Study

NCT03879408
View directory record Official record
Conditions
Pain
Interventions
440 mg naproxen sodium with 1000 mg acetaminophen, 220 mg naproxen sodium with 650 mg acetaminophen, 10 mg hydrocodone + 650 mg acetaminophen, 440 mg naproxen sodium, Placebo tablet
Drug
Lead sponsor
Johnson & Johnson Consumer Inc., McNeil Consumer Healthcare Division
Industry
Eligibility
17 Years to 50 Years
Enrollment
290 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 4, 2022 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Phase 1 Interventional

Double-Blind Trial of Ketamine Therapy Plus or Minus Naltrexone in Treatment Resistant Depression (TRD)

NCT02911597
View directory record Official record
Conditions
Depression
Interventions
Naltrexone
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 70 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Apr 23, 2018 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Phase 2Phase 3 Interventional

Low-Dose Naltrexone and Acetaminophen Combination and Sumatriptan in the Acute Treatment of Migraine With Nausea

NCT03185143
View directory record Official record
Conditions
Migraine With and Without Aura
Interventions
Naltrexone and Acetaminophen Combination, Sumatriptan 100 mg, Placebo
Drug
Lead sponsor
Allodynic Therapeutics, Inc
Industry
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
North Miami, Florida
Source: ClinicalTrials.gov public record
Updated Apr 13, 2021 · Synced Sep 9, 2026, 4:07 AM EDT
Withdrawn Phase 2 Interventional

Inpatient Buprenorphine Induction With Psilocybin for Opioid Use Disorder

NCT06005662
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Psilocybin
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2028
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced Sep 9, 2026, 4:07 AM EDT
Terminated Phase 2 Interventional Results available

Kappa Opioid Receptor Antagonism for the Tx of AUD and Comorbid PTSD

NCT03852628
View directory record Official record
Conditions
Post Traumatic Stress Disorder, Alcohol Abuse
Interventions
2mg Buprenex and 380mg Vivitrol, Placebo (SL pill qd, IM injection q4weeks)
Drug
Lead sponsor
Pharmacotherapies for Alcohol and Substance Use Disorders Alliance
Other
Eligibility
18 Years to 70 Years
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
2
States / cities
Tuscaloosa, Alabama • West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 13, 2023 · Synced Sep 9, 2026, 4:07 AM EDT
Recruiting Phase 3 Interventional

Post-Op Pain Control for Prophylactic Intramedullary Nailing.

NCT03823534
View directory record Official record
Conditions
Bone Metastases, Lymphoma, Multiple Myeloma, Opioid Use, Pain
Interventions
Ketorolac, Normal saline, Acetaminophen, Oxycodone Acetaminophen, Morphine, Hydrocodone/Acetaminophen, Oxycodone
Drug
Lead sponsor
St. Louis University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Buprenorphine/Naloxone Administered in Different Ways For Treating Opioid Dependence

NCT00134914
View directory record Official record
Conditions
Opioid-Related Disorders
Interventions
Buprenorphine
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 55 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1996 – 1998
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Phase 1 Interventional

Effect of Honey and Dextromethorphan on Nocturnal Cough and Sleep

NCT00127686
View directory record Official record
Conditions
Cough, Respiratory Tract Infections
Interventions
Dextromethorphan, Buckwheat Honey
Drug
Lead sponsor
Penn State University
Other
Eligibility
2 Years to 18 Years
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 23, 2017 · Synced Sep 9, 2026, 4:07 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Opioids in Chronic Kidney Disease Patients Undergoing Hemodialysis

NCT02452437
View directory record Official record
Conditions
Chronic Kidney Disease
Interventions
Oxycodone
Drug
Lead sponsor
Emerio & Lourdes Linares Research and Education Center
Other
Eligibility
30 Years to 60 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Dearborn, Michigan
Source: ClinicalTrials.gov public record
Updated May 21, 2015 · Synced Sep 9, 2026, 4:07 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 9, 2026, 4:07 AM EDT
Completed Phase 3 Interventional

Efficacy and Safety of Intranasal Morphine for Pain After Elective Orthopedic Surgery

NCT00390039
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Intranasal morphine, Placebo, IV morphine
Drug
Lead sponsor
Javelin Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
256 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
7
States / cities
Phoenix, Arizona • Bakersfield, California • State College, Pennsylvania + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 13, 2008 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Not applicable Interventional Results available

Liposomal Bupivacaine Versus Standard Analgesia in Total Joint Arthroplasty (TJA)

NCT02197273
View directory record Official record
Conditions
Osteoarthritis, Knee, Osteoarthritis, Hip, Osteoarthritis, Shoulder
Interventions
Liposomal bupivacaine, Standard of care analgesia
Drug
Lead sponsor
OhioHealth
Other
Eligibility
18 Years and older
Enrollment
211 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 20, 2016 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Not applicable Interventional Results available

Reduced Opioid Analgesic Requirements Via Improved Endogenous Opioid Function

NCT02469077
View directory record Official record
Conditions
Chronic Pain
Interventions
6 week aerobic exercise intervention, Placebo, Morphine, naloxone
Behavioral · Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 55 Years
Enrollment
117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
2
States / cities
Chicago, Illinois • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 22, 2020 · Synced Sep 9, 2026, 4:07 AM EDT
Active, not recruiting Phase 3 Interventional Accepts healthy volunteers

Tramadol Versus Placebo and Morphine in the Management of Post-Operative Pain Abdominoplasty

NCT03774836
View directory record Official record
Conditions
Pain Management
Interventions
Tramadol, Morphine, Placebo
Drug · Other
Lead sponsor
Avenue Therapeutics, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
3
States / cities
Pasadena, California • Houston, Texas • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated May 8, 2019 · Synced Sep 9, 2026, 4:07 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Subjective Analgesic Effects of Naloxone and Virtual Reality

NCT01105871
View directory record Official record
Conditions
Pain
Interventions
naloxone, Placebo
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 60 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 20, 2012 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Phase 3 Interventional Results available

Buprenorphine Transdermal System (BTDS) in Subjects With Moderate to Severe Chronic Low Back Pain

NCT00490919
View directory record Official record
Conditions
Low Back Pain
Interventions
Buprenorphine transdermal system, Placebo
Drug
Lead sponsor
Purdue Pharma LP
Industry
Eligibility
18 Years and older
Enrollment
539 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
86
States / cities
Anniston, Alabama • Mobile, Alabama • Chandler, Arizona + 71 more
Source: ClinicalTrials.gov public record
Updated Sep 9, 2012 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Phase 1 Interventional

Study to Evaluate the Exposures of Lofexidine and Its Major Metabolites in Subjects Seeking Buprenorphine Dose Reduction

NCT02801357
View directory record Official record
Conditions
Substance Withdrawal Syndrome, Opiate Addiction, Opiate Dependence
Interventions
lofexidine administration in subjects seeking buprenorphine dose reduction
Drug
Lead sponsor
USWM, LLC (dba US WorldMeds)
Industry
Eligibility
18 Years to 64 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 25, 2017 · Synced Sep 9, 2026, 4:07 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Endophenotype for Alcohol Misuse in Healthy Minority Populations

NCT00256451
View directory record Official record
Conditions
Healthy
Interventions
Naltrexone, placebo, alcohol, Sham alcohol
Drug · Other
Lead sponsor
University of Pennsylvania
Other
Eligibility
21 Years and older
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 20, 2019 · Synced Sep 9, 2026, 4:07 AM EDT
Terminated Phase 4 Interventional Results available

Safety Study to Assess Opiate Withdrawal Signs and Symptoms in Opioid Dependent Patients

NCT01100437
View directory record Official record
Conditions
Chronic Pain
Interventions
EMBEDA™ (morphine sulfate/naltrexone hydrochloride) crush, EMBEDA™ (morphine sulfate/naltrexone hydrochloride) whole
Drug
Lead sponsor
Pfizer
Industry
Eligibility
21 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 12, 2012 · Synced Sep 9, 2026, 4:07 AM EDT