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ClinicalTrials.gov public records Last synced Oct 20, 2026, 6:54 AM EDT

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Showing 145–168 of 244 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Opioid Abuse Clear all
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 2, 2016 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Change the Cycle: An RCT to Prevent Injection Initiation

NCT02774954
View directory record Official record
Conditions
Substance Abuse, Intravenous, HIV, Heroin Dependence, Opioid Dependence, Cocaine Dependence, Amphetamine Dependence
Interventions
Change the Cycle
Behavioral
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
979 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
2
States / cities
Los Angeles, California • San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 20, 2023 · Synced Oct 20, 2026, 6:54 AM EDT
Recruiting No phase listed Observational

Opioid/Benzodiazepine Polydrug Abuse

NCT03696017
View directory record Official record
Conditions
Polysubstance Abuse
Interventions
Multi-domain assessment battery
Other
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 70 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 30, 2025 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Not applicable Interventional

Exablate for LIFU Neuromodulation in Patients With Opioid Use Disorder (OUD)

NCT06612788
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Exablate Model 4000 Type 2.0/2.1
Device
Lead sponsor
West Virginia University
Other
Eligibility
18 Years to 60 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Jul 20, 2025 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Abuse Potential of HORIZANT With and Without Oxycodone in Healthy, Nondependent Recreational Opioid Users

NCT06247488
View directory record Official record
Conditions
Abuse Potential
Interventions
Placebo, Oxycodone 20 mg, GE-IR 200 mg, GE-IR 450 mg
Drug
Lead sponsor
Arbor Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 12, 2024 · Synced Oct 20, 2026, 6:54 AM EDT
Recruiting Phase 2 Interventional

Opioid/Benzodiazepine Polydrug Abuse: Aim 3

NCT05006079
View directory record Official record
Conditions
Opioid Abuse, Benzodiazepine Abuse, Polysubstance Abuse
Interventions
Morphine, Alprazolam, Placebo
Drug
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 30, 2025 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Phase 2 Interventional

Reducing Pain and Opioid Use With CBD

NCT05299944
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Cannabidiol, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
2
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 12, 2025 · Synced Oct 20, 2026, 6:54 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Evaluation of the Interactions of Cannabidiol (CBD) With Morphine

NCT05143424
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Morphine Sulfate
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 55 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 27, 2024 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Not applicable Interventional

Phone Interview to Prevent Recurring Opioid Overdoses

NCT02282306
View directory record Official record
Conditions
Overdose, Opioid-related Disorders, Drug Addiction, Drug Abuse, Substance Abuse, Opioid Use, Unspecified, Opioid Dependence, Drug Overdose
Interventions
TTIP-PRO
Behavioral
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
2
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated May 28, 2015 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Prescription Opioid Effects in Abusers Versus Non-Abusers

NCT00158184
View directory record Official record
Conditions
Opioid-Related Disorders, Substance-Related Disorders
Interventions
oxycodone 15 mg, oxycodone 30 mg, Placebo 0 mg
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 7, 2017 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Phase 1 Interventional Results available

Opioid and Cannabinoid Pharmacokinetic Interactions

NCT00308555
View directory record Official record
Conditions
Pain
Interventions
Cannabis
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 9, 2016 · Synced Oct 20, 2026, 6:54 AM EDT
Terminated Phase 2 Interventional

Increased Sensitivity to Pain Caused by Opioids in People Who Have Abused Prescription Opioids

NCT01821430
View directory record Official record
Conditions
Chronic Pain
Interventions
Pregabalin, Placebo
Drug
Lead sponsor
Georgetown University
Other
Eligibility
21 Years to 65 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Feb 9, 2017 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Not applicable Interventional

Do Discounted Vouchers for Medical Cannabis Reduce Opioid Use in Adults With Pain

NCT04495725
View directory record Official record
Conditions
Opioid Use, Marijuana, Chronic Pain
Interventions
Discounted Vouchers for Medical Cannabis Soft-Gel Capsule Products
Other
Lead sponsor
Vireo Health
Other
Eligibility
18 Years to 99 Years
Enrollment
270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
1
States / cities
Queens, New York
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Prazosin and Naltrexone (PaN) Study for Veterans With Alcohol Use Disorders

NCT02322047
View directory record Official record
Conditions
Alcohol Use Disorder, Posttraumatic Stress Disorder (PTSD)
Interventions
Prazosin, Naltrexone, Placebo (Prazosin), Placebo (Naltrexone)
Drug
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
18 Years to 80 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 29, 2020 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Not applicable Interventional

Improving Delivery of Mental Health Services for Patients With Drug Use and Other Behavioral and Emotional Problems

NCT00787735
View directory record Official record
Conditions
Study Focusing on Integrated Versus Non-integrated Psychiatric Care in, Opioid-dependent and Methadone Treated Patients With Other Psychiatric, Diagnoses
Interventions
Counseling compliance
Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 80 Years
Enrollment
380 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2009
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 6, 2017 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Abuse Potential of Buprenorphine and Naloxone in Non-Dependent Opioid Users

NCT00158236
View directory record Official record
Conditions
Opioid-Related Disorders
Interventions
Buprenorphine, Buprenorphine and Naloxone, Hydromorphone
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 55 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1997 – 1998
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 12, 2017 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Not applicable Interventional Results available

Risky Decision Making in Methamphetamine Users: The Role of Opioid Blockade

NCT01822132
View directory record Official record
Conditions
Methamphetamine Abuse, HIV
Interventions
Extended release naltrexone, Placebo
Drug
Lead sponsor
Oregon Health and Science University
Other
Eligibility
18 Years to 55 Years
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
2
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 5, 2019 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Not applicable Interventional

Transitions: Linkages From Jail To Community

NCT00841711
View directory record Official record
Conditions
HIV, Substance Abuse, HIV Infections
Interventions
Intensive Case Management
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
127 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
2
States / cities
New Haven, Connecticut • Waterbury, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 12, 2016 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of the Abuse Liability Potential of Samidorphan in Healthy, Non-Dependent, Recreational Opioid Users

NCT02218021
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Samidorphan, Placebo, Oxycodone
Drug
Lead sponsor
Alkermes, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Dec 2, 2014 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Abuse Potential of Intranasal VYCAVERT Tablets (Hydrocodone Bitartrate/Acetaminophen) in Recreational Opioid Users

NCT01759446
View directory record Official record
Conditions
Opioid-Related Disorders
Interventions
Placebo taken first, Generic H/A taken first, Vycavert taken first, Generic H/A plus i taken first, Generic H/A plus p taken first
Drug
Lead sponsor
Acura Pharmaceuticals Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Nov 1, 2018 · Synced Oct 20, 2026, 6:54 AM EDT
Completed No phase listed Observational

A Qualitative Study to Assess the Content Validity of the Prescription Opioid Misuse and Abuse Questionnaire

NCT02660606
View directory record Official record
Conditions
Opioid-Related Disorders, Opiate Addiction, Narcotic Abuse, Drug Abuse
Interventions
Prescription Opioid Misuse and Abuse Questionnaire (POMAQ)
Other
Lead sponsor
Member Companies of the Opioid PMR Consortium
Industry
Eligibility
18 Years and older
Enrollment
54 participants
Timeline
2015 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 15, 2020 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Abuse Potential of Orally Administered Crushed Embeda Compared to Crushed Controlled-Release Morphine and Placebo in Non-Dependent Recreational Opioid Users

NCT01380093
View directory record Official record
Conditions
Nondependent Opioid Abuse, Episodic
Interventions
Placebo, MS Contin (morphine sulfate, controlled release), EMBEDA (morphine sulfate / naltrexone hydrochloride)
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 31, 2012 · Synced Oct 20, 2026, 6:54 AM EDT
Recruiting No phase listed Observational

Cannabis Use and Outcomes in Black and White Patients With Cancer

NCT06037681
View directory record Official record
Conditions
Cancer
Interventions
Not listed
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
21 Years to 99 Years
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
3
States / cities
Buffalo, New York • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 30, 2025 · Synced Oct 20, 2026, 6:54 AM EDT
Completed Early Phase 1 Interventional Results available

Caffeine and Neurologic Recovery Following Surgery and General Anesthesia

NCT03577730
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Caffeine Citrate, Dextrose Water
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 6, 2021 · Synced Oct 20, 2026, 6:54 AM EDT