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Showing 1–24 of 453 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Drug Abuse Clear all
Completed Phase 2 Interventional Results available

Study of Medical Treatment for Methamphetamine Addiction

NCT00833443
View directory record Official record
Conditions
Methamphetamine, Amphetamine Dependence, Pharmacogenetics, Methamphetamine Dependence, Substance Abuse
Interventions
Bupropion
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Feb 25, 2014 · Synced Jul 21, 2026, 9:40 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Young Adult Tobacco/Nicotine and Cannabis Co-use

NCT06239350
View directory record Official record
Conditions
Tobacco Use Disorder, Nicotine Dependence
Interventions
Counseling, Contingency management, Text-based support
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 25 Years
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Phase 4 Interventional Results available

Dutasteride for the Reduction of Alcohol Use in Male Drinkers

NCT01262287
View directory record Official record
Conditions
Alcoholism, Alcohol Abuse, Alcohol Dependence
Interventions
Dutasteride, Placebo
Drug
Lead sponsor
UConn Health
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 19, 2017 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Integrating Clinical Practice Guidelines for Smoking Cessation Into Mental Health Care for Veterans With Posttraumatic Stress Disorder

NCT00118534
View directory record Official record
Conditions
Mental Health, Stress Disorders, Post-Traumatic, Substance-Related Disorders, Tobacco Use Disorder
Interventions
Integrated Care for Smoking Cessation in PTSD patients, Standard of Care
Behavioral
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 80 Years
Enrollment
943 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
11
States / cities
Tuscaloosa, Alabama • San Diego, California • Washington D.C., District of Columbia + 8 more
Source: ClinicalTrials.gov public record
Updated May 4, 2014 · Synced Jul 21, 2026, 9:40 AM EDT
Completed No phase listed Observational

Baseline Epidemiologic Assessment of Abuse-Deterrence of MorphaBond Extended Release (BEAD-MB)

NCT04033094
View directory record Official record
Conditions
Baseline Epidemiologic Assessment
Interventions
MorphaBond ER, Comparator Drug
Drug
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
Not listed
Enrollment
17,566 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Basking Ridge, New Jersey
Source: ClinicalTrials.gov public record
Updated Mar 14, 2021 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Phase 1 Interventional

A Study to Evaluate the Oral Abuse Potential of PF614 in Non-Dependent Recreational Opioid Users (PF614-104)

NCT05571345
View directory record Official record
Conditions
Recreational Drug Use
Interventions
PF614, Oxycodone Hydrochloride 40 mg, Placebo
Drug
Lead sponsor
Ensysce Biosciences
Industry
Eligibility
18 Years to 55 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 23, 2024 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate Abuse Potential of Istradefylline

NCT02609477
View directory record Official record
Conditions
Drug Abuse
Interventions
Istradefylline, Phentermine 45 mg, Placebo
Drug · Other
Lead sponsor
Kyowa Kirin Co., Ltd.
Industry
Eligibility
18 Years to 55 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 24, 2024 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Gender-Responsive Drug Use Treatment for Juvenile Justice Girls

NCT02293057
View directory record Official record
Conditions
Drug Use
Interventions
VOICES Group, Girl Health Group
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
12 Years to 24 Years · Female only
Enrollment
132 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2020
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 22, 2020 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Not applicable Interventional Results available

A Randomized Trial of Vaccine Adherence in Young Injection Drug Users

NCT00244374
View directory record Official record
Conditions
Medication Adherence, Substance Abuse, Intravenous, Risk Behavior, Hepatitis A, Hepatitis B, Hepatitis C
Interventions
Hepatitis A & B vaccine, Outreach, AIC, SEP
Biological · Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
14 Years to 29 Years
Enrollment
546 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 29, 2013 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Phase 2 Interventional Results available

Study of the Medication Prazosin for Alcohol Dependence

NCT00762710
View directory record Official record
Conditions
Alcoholism
Interventions
Prazosin medication, Placebo medication
Drug
Lead sponsor
Seattle Institute for Biomedical and Clinical Research
Other
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 3, 2020 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Reducing Health Problems Associated With Injection Drug Use

NCT01128920
View directory record Official record
Conditions
Intravenous Drug Abuse, HIV Infections
Interventions
Skin and Needle Hygiene Intervention, No intervention - assessment-only condition
Behavioral · Other
Lead sponsor
University of Northern Colorado
Other
Eligibility
18 Years and older
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 3, 2012 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Phase 1 Interventional

Use of a Generative AI (Gen-AI) Chatbot for Anxiety and Depression Among Persons With Cannabis Use

NCT06920238
View directory record Official record
Conditions
Cannabis Use Disorder, Anxiety, Depression, Anxiety, Depression - Major Depressive Disorder
Interventions
Therabot-CALM
Device
Lead sponsor
Trustees of Dartmouth College
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Voucher-Based Incentives in a Prevention Setting

NCT00607269
View directory record Official record
Conditions
Substance-related Disorders
Interventions
Voucher-Based Reinforcement Therapy
Behavioral
Lead sponsor
Friends Research Institute, Inc.
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 31, 2013 · Synced Jul 21, 2026, 9:40 AM EDT
Completed No phase listed Observational

Quiting Marijuana Use: Self-report Study of Quitting Straegies and Withdrawal Symptoms

NCT01603992
View directory record Official record
Conditions
Cannabis Abuse, Cannabis Dependence
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years and older
Enrollment
822 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
3
States / cities
Baltimore, Maryland • Catonsville, Maryland • Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 4, 2018 · Synced Jul 21, 2026, 9:40 AM EDT
Completed No phase listed Observational

Sustained Release d-Amphetamine & Buprenorphine on Drug Seeking Behavior in Opioid & Cocaine Dependent Individuals

NCT00429767
View directory record Official record
Conditions
Heroin Dependence, Opioid-Related Disorders, Cocaine Abuse or Dependence
Interventions
Not listed
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 55 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 4, 2012 · Synced Jul 21, 2026, 9:40 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Kentucky Outreach Service Kiosk (KyOSK): Reducing HIV, HCV, and Overdose Risk

NCT05657106
View directory record Official record
Conditions
Opioid-Related Disorders, Hepatitis C (HCV), Human Immunodeficiency Virus (HIV), Drug Overdose, Substance Abuse, Intravenous Drug Usage, Opiate Substitution Treatment, Sexually Transmitted Diseases
Interventions
Harm reduction kiosk
Behavioral
Lead sponsor
April M Young
Other
Eligibility
18 Years and older
Enrollment
752 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Drug Abuse Prevention Among Girls Through a Mother-Daughter Intervention

NCT01236248
View directory record Official record
Conditions
Substance Use
Interventions
Prevention
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
11 Years to 13 Years · Female only
Enrollment
916 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2012
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 17, 2017 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study Evaluating Abuse Potential of Lyrica® in Healthy Non-Drug Dependent Recreational Opioid Users

NCT05053126
View directory record Official record
Conditions
Abuse Potential
Interventions
Pregabalin 300mg, pregabalin 450 mg, Pregabalin 300 mg with oxycodone 20 mg, pregabalin 450 mg with oxycodone 20 mg, oxycodone 20 mg, Placebo
Drug
Lead sponsor
Viatris Specialty LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Marlton, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 13, 2023 · Synced Jul 21, 2026, 9:40 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Understanding Drug Abuse Treatment Outcomes

NCT01678833
View directory record Official record
Conditions
Drug Abuse/Dependence
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 60 Years · Male only
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
2
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 4, 2018 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effects of Citicoline on Brain Function and Behavior in Marijuana-Dependent Individuals

NCT00158249
View directory record Official record
Conditions
Marijuana Abuse
Interventions
citicoline, placebo
Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 21, 2014 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Phase 1 Interventional

Oral Fluid, Plasma and Whole Pharmacokinetics and Stability Following Smoked Cannabis

NCT01071616
View directory record Official record
Conditions
Cannabis Use, Drug Abuse
Interventions
Cannabis Cigarette
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 45 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 4, 2018 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Not applicable Interventional

Impact of Direct Outreach to Expand Access to Naloxone in the Context of Standing Orders

NCT03241771
View directory record Official record
Conditions
Opioid Abuse, Overdose, Risk Behavior
Interventions
Naloxone Navigator 1.0
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years and older
Enrollment
325 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 23, 2023 · Synced Jul 21, 2026, 9:40 AM EDT
Completed Phase 1Phase 2 Interventional

Dental and Medical Office iMET to Reduce Teen Tobacco, Alcohol, and Drug Use

NCT00907309
View directory record Official record
Conditions
Use; Tobacco, Harmful, Alcohol Abuse, Drug Abuse
Interventions
iMET, iMET/TE
Behavioral
Lead sponsor
Boston Children's Hospital
Other
Eligibility
12 Years to 21 Years
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 6, 2016 · Synced Jul 21, 2026, 9:40 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

First Years Away From Home: Letting Go and Staying Connected

NCT03227809
View directory record Official record
Conditions
Substance Abuse, Risk Reduction, RIsky Sexual Behavior
Interventions
Handbook condition, Handbook plus condition
Behavioral
Lead sponsor
Washington State University
Other
Eligibility
17 Years to 22 Years
Enrollment
910 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Pullman, Washington
Source: ClinicalTrials.gov public record
Updated May 18, 2020 · Synced Jul 21, 2026, 9:40 AM EDT