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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Cannabis Use Disorder Clear all
Completed No phase listed Observational

Medical Marijuana Use in HIV+ Patients: Probability Survey

NCT01536912
View directory record Official record
Conditions
HIV Positive
Interventions
Not listed
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 70 Years
Enrollment
218 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 29, 2015 · Synced Jul 21, 2026, 7:12 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Skills for Talking About Cannabis for Families of Young Adults With Psychosis

NCT06961877
View directory record Official record
Conditions
Caregiver Burden, Cannabis Use, Expressed Emotion, Communications Skills
Interventions
Cannabis Conversation Skills for Families (CCSF)
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 10, 2025 · Synced Jul 21, 2026, 7:12 AM EDT
Recruiting Phase 2Phase 3 Interventional

Alcohol Use Disorder and Cannabidiol

NCT05613608
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
Cannabidiol, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
21 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Jul 21, 2026, 7:12 AM EDT
Withdrawn Phase 2 Interventional

Varenicline for the Treatment of Cannabis and Tobacco Use Disorders in Veterans

NCT05294263
View directory record Official record
Conditions
Tobacco Use Disorder, Cannabis Use Disorder
Interventions
Varenicline, Placebo
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 26, 2024 · Synced Jul 21, 2026, 7:12 AM EDT
Completed Not applicable Interventional Results available

Reducing Cannabis Use for Sleep Among Adults Using Medical Cannabis

NCT03964974
View directory record Official record
Conditions
Insomnia Chronic, Cannabis Use
Interventions
Cognitive Behavioral Therapy for Insomnia in Cannabis Users (CBTi-CB), Sleep Hygiene Education (SHE)
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
21 Years and older
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
2
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 13, 2022 · Synced Jul 21, 2026, 7:12 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Effects of Dronabinol (Oral THC) on Cannabis Use

NCT01394185
View directory record Official record
Conditions
Marijuana Smoking
Interventions
Dronabinol 120mg/day, Placebo, Dronabinol 240mg/day
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 100 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 2, 2017 · Synced Jul 21, 2026, 7:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

THC Crossover Study

NCT04429568
View directory record Official record
Conditions
THC, Cannabis, Cannabis Smoking, Cannabis Use, Unspecified, Cigarette Smoking, Tobacco Use, Nicotine Dependence, Nicotine Withdrawal, Cardiovascular Risk Factor
Interventions
Smoked Cannabis, Vaped Cannabis, Tobacco Cigarette
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years and older
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 30, 2024 · Synced Jul 21, 2026, 7:12 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

The Role of Sleep in the Treatment of Cannabis Use Disorders

NCT01685073
View directory record Official record
Conditions
Drug Addiction
Interventions
Zolpidem extended-release, MET/CBT
Drug · Behavioral
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 55 Years
Enrollment
127 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2018
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 21, 2019 · Synced Jul 21, 2026, 7:12 AM EDT
Recruiting Not applicable Interventional

Preliminary Efficacy Trial of a Digital Intervention for Depression and Cannabis Use

NCT06878859
View directory record Official record
Conditions
Depression - Major Depressive Disorder, Cannabis Use Disorder, Mental Disorder
Interventions
Amplification of Positivity - Cannabis Use (AMP-C)
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Jul 21, 2026, 7:12 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Effect of Cannabis on Cigarette Use Behavior

NCT06609083
View directory record Official record
Conditions
Cannabis Use, Tobacco Use, Cigarette Smoking
Interventions
THC 30mg, THC 5mg, THC 0mg, Cigarette Full Nicotine, Cigarette Reduced Nicotine
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Jul 21, 2026, 7:12 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, 7:12 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 26, 2024 · Synced Jul 21, 2026, 7:12 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Effects of THC on Alcohol Consumption and Neural Correlates of Reward

NCT06446479
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Dronabinol Pill, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
21 Years to 40 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 18, 2024 · Synced Jul 21, 2026, 7:12 AM EDT
Withdrawn Phase 2 Interventional

Effects of Cannabidiol on Psychiatric Symptoms, Cognition, and Cannabis Consumption in Cannabis Users With Recent-Onset Psychosis

NCT03883360
View directory record Official record
Conditions
Schizophrenia Spectrum Disorders, Cannabis Use
Interventions
Cannabidiol (CBD), Placebo
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 35 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2050
U.S. locations
3
States / cities
Los Angeles, California • Baltimore, Maryland • Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 18, 2021 · Synced Jul 21, 2026, 7:12 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Screening Protocol for Research Participants

NCT01010620
View directory record Official record
Conditions
Schizophrenia, Substance Abuse, Cocaine Abuse, Tobacco Use Disorder
Interventions
Various Screening psychiatric and medical assessments
Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 64 Years
Enrollment
523 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2019
U.S. locations
1
States / cities
Catonsville, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 18, 2019 · Synced Jul 21, 2026, 7:12 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Cannabidiol Pharmacotherapy for Adults With Cannabis Use Disorder

NCT03102918
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Cannabidiol, Placebo
Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 24, 2019 · Synced Jul 21, 2026, 7:12 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Hybrid Effectiveness-Implementation Trial of a School-Based Teen Marijuana Checkup

NCT03111667
View directory record Official record
Conditions
Cannabis Use
Interventions
Teen Marijuana Check Up, Treatment as Usual, Gold Standard Coaching, As Needed Coaching
Behavioral · Other
Lead sponsor
University of Washington
Other
Eligibility
14 Years and older
Enrollment
264 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2023
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 14, 2023 · Synced Jul 21, 2026, 7:12 AM EDT
Completed Not applicable Interventional

Study Comparing Two Types of Psychotherapy for Treating Depression and Substance Abuse

NCT00108407
View directory record Official record
Conditions
Alcohol Abuse, Cannabis Abuse, Major Depressive Disorder, Substance-Related Disorders
Interventions
Integrated Cognitive Behavioral Therapy, Twelve Step Facilitation Therapy
Behavioral
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2004
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Mar 5, 2009 · Synced Jul 21, 2026, 7:12 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Effect of Cannabis on E-Cigarette Use Behavior

NCT06609109
View directory record Official record
Conditions
Cannabis Use, Tobacco Use, Electronic Cigarette Use
Interventions
THC High Dose, THC Low Dose, THC 0mg, E-Cigarette Full Nicotine, E-Cigarette Placebo Nicotine
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Jul 21, 2026, 7:12 AM EDT
Completed Phase 2 Interventional

Brief Voluntary Alcohol and Drug Intervention for Middle School Youth

NCT01081119
View directory record Official record
Conditions
Alcohol Drinking, Cigarette Smoking, Marijuana Smoking
Interventions
Project CHOICE
Behavioral
Lead sponsor
RAND
Other
Eligibility
11 Years to 15 Years
Enrollment
6,455 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 9, 2014 · Synced Jul 21, 2026, 7:12 AM EDT
Not listed No phase listed Observational

Evaluating the Effects of Cannabis Use and Circulating Cannabinoids on Tumor Infiltrating Lymphocytes in Malignant Melanoma

NCT05520294
View directory record Official record
Conditions
Melanoma
Interventions
High-performance liquid chromatography-tandem mass spectrometry assays
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
21 Years to 100 Years
Enrollment
90 participants
Timeline
2022 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 16, 2024 · Synced Jul 21, 2026, 7:12 AM EDT
Completed Phase 4 Interventional Results available

Bupropion for ADHD in Adolescents With Substance Use Disorder

NCT00936299
View directory record Official record
Conditions
Attention Deficit Hyperactivity Disorder, Nicotine Dependence, Cannabis Use Disorder
Interventions
Bupropion, Placebo
Drug · Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
13 Years to 19 Years
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 22, 2019 · Synced Jul 21, 2026, 7:12 AM EDT
Completed No phase listed Observational

Medical Marijuana Use in HIV+ Patients Prospective Cohort Study

NCT01536899
View directory record Official record
Conditions
HIV Positive, Marijuana Smoking
Interventions
Not listed
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 70 Years
Enrollment
119 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 4, 2018 · Synced Jul 21, 2026, 7:12 AM EDT
Not listed Phase 2Phase 3 Interventional

Brief Counseling to Reduce Injuries Among Emergency Department Patients Who Report Alcohol and Substance Use

NCT00547963
View directory record Official record
Conditions
Alcohol Drinking, Marijuana Smoking
Interventions
brief counseling
Behavioral
Lead sponsor
National Institute on Alcohol Abuse and Alcoholism (NIAAA)
NIH
Eligibility
18 Years and older
Enrollment
554 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2008
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Oct 7, 2008 · Synced Jul 21, 2026, 7:12 AM EDT