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Showing 1–24 of 350 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Cannabis Abuse Clear all
Recruiting Not applicable Interventional

Medical Cannabis and Behavior

NCT06808048
View directory record Official record
Conditions
Chronic Pain Patients, Medical Cannabis Users
Interventions
Cognitive testing, Task-based fMRI measure of face-name and verbal learning
Behavioral
Lead sponsor
University of Minnesota
Other
Eligibility
30 Years to 75 Years
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Jul 21, 2026, 7:28 PM 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, 7:28 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Dronabinol Treatment for Marijuana Addiction

NCT00217971
View directory record Official record
Conditions
Marijuana Abuse
Interventions
Dronabinol, Placebo
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 60 Years
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 23, 2019 · Synced Jul 21, 2026, 7:28 PM EDT
Completed Phase 2 Interventional

Atomoxetine for Treating Marijuana-Abusing Adolescents Who Have Attention Deficit Hyperactivity Disorder

NCT00142961
View directory record Official record
Conditions
Attention Deficit Disorder With Hyperactivity, Marijuana Abuse
Interventions
Atomoxetine, placebo
Drug · Other
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
14 Years to 21 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 22, 2019 · Synced Jul 21, 2026, 7:28 PM EDT
Completed Phase 3 Interventional Results available

Achieving Cannabis Cessation-Evaluating N-Acetylcysteine Treatment

NCT01675661
View directory record Official record
Conditions
Cannabis Dependence
Interventions
N-Acetylcysteine, Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 50 Years
Enrollment
302 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
6
States / cities
Los Angeles, California • New Haven, Connecticut • Lexington, Kentucky + 3 more
Source: ClinicalTrials.gov public record
Updated May 23, 2018 · Synced Jul 21, 2026, 7:28 PM EDT
Recruiting Phase 1Phase 2 Interventional

SCORE Emerging Adult Cannabis Use & Stress

NCT05885542
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Cannabidiol oral solution, Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 25 Years
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Jul 21, 2026, 7:28 PM EDT
Completed No phase listed Observational Results available

Anxiety, Inflammation, Stress, and Cannabinoids

NCT03491384
View directory record Official record
Conditions
Anxiety, Anxiety Disorders, Anxiety Generalized, Anxiety Chronic, Inflammation, Inflammatory Response
Interventions
Cannabis (smoked flower, ingested edible)
Drug
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
21 Years to 70 Years
Enrollment
361 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 26, 2025 · Synced Jul 21, 2026, 7:28 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cannabis Observational Study on Mood, Inflammation, and Cognition

NCT03522103
View directory record Official record
Conditions
Inflammation, Inflammatory Response, Mood, Cognitive Change
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
21 Years to 70 Years
Enrollment
421 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 11, 2021 · Synced Jul 21, 2026, 7:28 PM EDT
Completed No phase listed Observational

Gastric Ultrasound Assessment for Patients Taking Cannabis

NCT06567873
View directory record Official record
Conditions
Gastric Ultrasound, Point of Care Ultrasound, Cannabis Use
Interventions
Gastric Ultrasound Exam
Other
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
18 Years to 99 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 15, 2025 · Synced Jul 21, 2026, 7:28 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

The Effects of ∆-9-THC and Naloxone in Humans

NCT01591629
View directory record Official record
Conditions
Healthy
Interventions
Naloxone, Delta-9-THC, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 8, 2022 · Synced Jul 21, 2026, 7:28 PM EDT
Completed Phase 2 Interventional Results available

Effectiveness Study of Dronabinol and BRENDA for the Treatment of Cannabis Withdrawal

NCT00480441
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Dronabinol, BRENDA therapy, Placebo
Drug · Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 55 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 28, 2019 · Synced Jul 21, 2026, 7:28 PM 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, 7:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Combined Effect of Chronic Cannabis Use and Subconcussive Head Impacts on Brain Health

NCT04641832
View directory record Official record
Conditions
Concussion, Mild
Interventions
Soccer heading
Other
Lead sponsor
Indiana University
Other
Eligibility
18 Years to 26 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Bloomington, Indiana
Source: ClinicalTrials.gov public record
Updated Mar 1, 2023 · Synced Jul 21, 2026, 7:28 PM EDT
Completed Not applicable Interventional

Short-Term Exposure for PTSD

NCT02874898
View directory record Official record
Conditions
Chronic Post-Traumatic Stress Disorder, Marijuana Abuse
Interventions
Brief Imaginal Exposure
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 65 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 22, 2022 · Synced Jul 21, 2026, 7:28 PM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

High Potency Cannabis: Acute and Protracted Effects

NCT06859723
View directory record Official record
Conditions
Abuse Cannabis, Pain, Pharmacokinetics
Interventions
Placebo Comparator: Placebo, Low dose THC, High dose THC
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 55 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 5, 2025 · Synced Jul 21, 2026, 7:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Investigating Real-world Stress-related Mechanisms in Heavy Cannabis Users

NCT05833230
View directory record Official record
Conditions
Cannabis Use, Cannabis, Cannabis Abuse
Interventions
Intensive Day Monitoring
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 3, 2025 · Synced Jul 21, 2026, 7:28 PM 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, 7:28 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Testing the Interactive Effects of Delta-9-Tetrahydrocannabinol and Pregnenolone

NCT02576912
View directory record Official record
Conditions
Healthy
Interventions
Active Delta-9-THC, Active Pregnenolone, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 6, 2023 · Synced Jul 21, 2026, 7:28 PM 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, 7:28 PM EDT
Completed Phase 2 Interventional

CBD for the Treatment of Alcohol Use Disorder

NCT04873453
View directory record Official record
Conditions
Alcohol Use Disorder
Interventions
Cannabidiol, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
21 Years to 60 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 30, 2024 · Synced Jul 21, 2026, 7:28 PM 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, 7:28 PM 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, 7:28 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Development and Efficacy Test of Computerized Treatment for Marijuana Dependence

NCT00594659
View directory record Official record
Conditions
Marijuana Abuse and Dependence
Interventions
Psychotherapy, Computerized Psychotherapy, Motivational enhancement therapy
Behavioral
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Dec 3, 2013 · Synced Jul 21, 2026, 7:28 PM 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, 7:28 PM EDT