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Showing 1–24 of 1,551 matching trials from the live ClinicalTrials.gov search.
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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 8, 2026, 4:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessment of Biomarkers in Children to Help Parents Quit Tobacco

NCT04832659
View directory record Official record
Conditions
Tobacco Dependence
Interventions
CEASE, CEASE + BIO
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
865 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Impact of Very Low Nicotine Content Cigarettes in a Complex Marketplace

NCT03272685
View directory record Official record
Conditions
Tobacco Smoking, Nicotine Dependence
Interventions
Very Low Nicotine Content Cigarettes, Normal Nicotine Content Cigarettes
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
21 Years and older
Enrollment
799 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
6
States / cities
San Francisco, California • Minneapolis, Minnesota • Durham, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2024 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Phase 2 Interventional Results available

Human Behavioral Pharmacology Laboratory (HBPL) Study of Varenicline's Impact on Cocaine and Alcohol Craving

NCT01151813
View directory record Official record
Conditions
Alcohol Dependence, Cocaine Dependence
Interventions
Varenicline, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
21 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 17, 2020 · Synced Sep 8, 2026, 4:30 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Acoustic Startle Reduction In Cocaine Dependence

NCT00430690
View directory record Official record
Conditions
Cocaine-Related Disorders
Interventions
acoustic startle testing
Procedure
Lead sponsor
Emory University
Other
Eligibility
18 Years to 80 Years
Enrollment
144 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2011
U.S. locations
1
States / cities
Decatur, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 6, 2019 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Nicotine Lozenge to Reduce Smokeless Tobacco Use

NCT00218283
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Nicotine Lozenge, Behavioral Counseling
Drug · Behavioral
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 70 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 9, 2017 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Not applicable Interventional Results available

Treatment for Nicotine Addiction in Women

NCT02448654
View directory record Official record
Conditions
Nicotine Dependence
Interventions
Tolcapone, Sugar Pill
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Nov 23, 2020 · Synced Sep 8, 2026, 4:30 PM EDT
Not listed Not applicable Interventional

Targeted Intervention for Bipolar Smokers

NCT01550029
View directory record Official record
Conditions
Nicotine Dependence, Bipolar Disorder
Interventions
Counseling/Healthy Lifestyle, Counseling/Managing Mood
Behavioral
Lead sponsor
University of Cincinnati
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 6, 2014 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cooling Agent Pilot Among Adult Menthol Smokers

NCT06477601
View directory record Official record
Conditions
Tobacco Dependence
Interventions
Assigning cooling agent type cigarettes, Assigning traditional tobacco type cigarettes, Assigning menthol type cigarettes
Other
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
21 Years and older
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 5, 2025 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Not applicable Interventional Results available

A Study to Help People Quit Smoking.

NCT01880099
View directory record Official record
Conditions
Nicotine Dependence
Interventions
placebo, Galantamine 8mg, Galantamine 16mg
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 22, 2020 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Treatment of Opioid/Heroin Dependence: Comparison of Three Medication Dosing Regimens

NCT00218127
View directory record Official record
Conditions
Heroin Dependence, Opioid-Related Disorders
Interventions
Levoacetyl Methadol
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
25 Years to 55 Years
Enrollment
142 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2005
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 8, 2026, 4:30 PM EDT
Completed No phase listed Observational

Sleep Disturbance and Relapse in Individuals With Alcohol Dependence: An Exploratory Mixed Methods Study

NCT02181569
View directory record Official record
Conditions
Alcoholism
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years and older
Enrollment
198 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Phase 4 Interventional Results available

Lamotrigine add-on Therapy for Bipolar Disorder and Cocaine Dependency

NCT00280293
View directory record Official record
Conditions
Bipolar Disorder, Cocaine Dependence
Interventions
Lamotrigine, Placebo
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 70 Years
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Sep 25, 2013 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Not applicable Interventional

A Placebo-Controlled Study of a Combination of Metyrapone and Oxazepam in Cocaine Addiction

NCT00567814
View directory record Official record
Conditions
Cocaine Dependence, Cocaine Addiction
Interventions
Metyrapone, Oxazepam, Placebo
Drug
Lead sponsor
Embera NeuroTherapeutics, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Shreveport, Louisiana
Source: ClinicalTrials.gov public record
Updated Dec 30, 2008 · Synced Sep 8, 2026, 4:30 PM 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 8, 2026, 4:30 PM 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 8, 2026, 4:30 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Safety, Tolerability and Abuse Liability Study of Intravenous NRP104 in Adults With Stimulant Abuse Histories

NCT00247572
View directory record Official record
Conditions
Attention Deficit Disorder With Hyperactivity, Amphetamine-Related Disorders, Substance-Related Disorders
Interventions
NRP104
Drug
Lead sponsor
New River Pharmaceuticals
Industry
Eligibility
18 Years to 55 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 4, 2007 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Low Nicotine Content Cigarettes in Vulnerable Populations: Opioid Use Disorder

NCT04092101
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Cigarettes with varying nicotine content, E-Cigarettes
Other
Lead sponsor
University of Vermont
Other
Eligibility
21 Years to 70 Years
Enrollment
326 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
2
States / cities
Baltimore, Maryland • Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Mar 29, 2025 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Integrated Treatment for Cocaine and Mood Disorders - 1

NCT00227812
View directory record Official record
Conditions
Cocaine Dependence, Depressive Disorder, Major
Interventions
Bupropion
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 55 Years
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2005
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Not applicable Interventional

The Navigator Trial

NCT03684681
View directory record Official record
Conditions
Opioid Use, Opioid Dependence, Opioid Abuse, Opioid-Related Disorders
Interventions
Peer Navigator Intervention, Social Work Intervention
Behavioral
Lead sponsor
Rhode Island Hospital
Other
Eligibility
18 Years and older
Enrollment
650 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jun 21, 2023 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Phase 1Phase 2 Interventional Results available

A Sequenced Behavioral and Medication Intervention for Cocaine Dependence

NCT01986075
View directory record Official record
Conditions
Cocaine Dependence
Interventions
Computer-assisted behavior therapy, Mixed-Amphetamine Salts- Extended Release (MAS-ER), Placebo
Behavioral · Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 60 Years
Enrollment
145 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 24, 2022 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Baclofen for Treating Anxiety and Alcoholism

NCT01751386
View directory record Official record
Conditions
Alcoholism, Alcohol Dependence, Alcohol Drinking Related Problems, Alcohol Drinking, Anxiety Disorder
Interventions
Baclofen, Placebo
Drug · Other
Lead sponsor
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
NIH
Eligibility
21 Years to 65 Years
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 17, 2017 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Phase 2 Interventional Results available

Effects and Therapeutic Potential of Psilocybin in Alcohol Dependence

NCT01534494
View directory record Official record
Conditions
Alcohol Dependence
Interventions
Psilocybin
Drug
Lead sponsor
University of New Mexico
Other
Eligibility
25 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Albuquerque, New Mexico
Source: ClinicalTrials.gov public record
Updated Sep 25, 2023 · Synced Sep 8, 2026, 4:30 PM EDT
Completed Phase 2 Interventional Results available

Pharmacological Treatment of Comorbid Alcohol and Marijuana Withdrawal and Dependence

NCT02210195
View directory record Official record
Conditions
Cannabis Dependence, Alcohol Dependence, Cannabis Use Disorder, Alcohol Use Disorder
Interventions
aprepitant, Placebo, Manual-guided behavioral counseling
Drug · Behavioral
Lead sponsor
The Scripps Research Institute
Other
Eligibility
18 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Aug 1, 2017 · Synced Sep 8, 2026, 4:30 PM EDT