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ClinicalTrials.gov public records Last synced Oct 19, 2026, 1:10 PM EDT

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Showing 1–24 of 269 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Marijuana Use Disorder Clear all
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 3, 2017 · Synced Oct 19, 2026, 1:10 PM EDT
Completed Not applicable Interventional

Web-based vs In-person Personalized Feedback Intervention for Comorbid Substance Use and Disordered Gambling

NCT01529047
View directory record Official record
Conditions
Gambling, Alcohol Consumption, Cannabis
Interventions
Personalized Feedback Intervention
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
17 Years to 24 Years
Enrollment
361 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 27, 2023 · Synced Oct 19, 2026, 1:10 PM EDT
Completed Phase 1 Interventional

Use of a Mobile Health Sensor in an Open Label Trial of Lorcaserin for the Treatment of Cannabis Use Disorder

NCT02932215
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
lorcaserin, Fitbit Charge HR
Drug · Other
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 60 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 11, 2019 · Synced Oct 19, 2026, 1:10 PM EDT
Withdrawn Phase 2Phase 3 Interventional Accepts healthy volunteers

Integration of (iSBIRT) for Teen Drug Use Into a Pediatric Network

NCT01454206
View directory record Official record
Conditions
Substance Use
Interventions
iSBIRT
Behavioral
Lead sponsor
Boston Children's Hospital
Other
Eligibility
12 Years to 18 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 7, 2016 · Synced Oct 19, 2026, 1:10 PM EDT
Recruiting Not applicable Interventional

Integrated Treatment for Enhancing Growth in Recovery During Adolescence

NCT06395467
View directory record Official record
Conditions
Alcohol Use Disorder, Cannabis Use Disorder
Interventions
InTEGRA, MET/CBT
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
14 Years to 21 Years
Enrollment
294 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
2
States / cities
Farmington, Connecticut • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 6, 2026 · Synced Oct 19, 2026, 1:10 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 2, 2023 · Synced Oct 19, 2026, 1:10 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Effects of Smoked Marijuana on Risk Taking and Decision Making Tasks

NCT00373399
View directory record Official record
Conditions
Marijuana Use Disorder
Interventions
Inactive Marijuana (0% THC), Low THC marijuana (1.8 %THC), High THC marijuana (3.9% THC)
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 19, 2018 · Synced Oct 19, 2026, 1:10 PM EDT
Completed Not applicable Interventional

Affective Management Training for Cannabis Misuse

NCT03432013
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
CUD-AMT, SUD-CBT
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 25 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 17, 2022 · Synced Oct 19, 2026, 1:10 PM EDT
Completed Not applicable Interventional Results available

First Episode Schizophrenia and Cannabis-Related Disorder Study

NCT00573287
View directory record Official record
Conditions
Cannabis-Related Disorder, Substance-Related Disorders, Schizophrenia, Psychotic Disorders
Interventions
clozapine, risperidone
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
17 Years to 45 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2011
U.S. locations
5
States / cities
Concord, New Hampshire • Lebanon, New Hampshire • Manchester, New Hampshire + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 23, 2019 · Synced Oct 19, 2026, 1:10 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 6, 2026 · Synced Oct 19, 2026, 1:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Motivational Interviewing and Culture for Urban Native American Youth (MICUNAY)

NCT02290938
View directory record Official record
Conditions
Alcohol Use, Marijuana Use
Interventions
MICUNAY, Community Wellness Gathering
Behavioral · Other
Lead sponsor
RAND
Other
Eligibility
14 Years to 18 Years
Enrollment
185 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
2
States / cities
Los Angeles, California • Oakland, California
Source: ClinicalTrials.gov public record
Updated Jun 26, 2024 · Synced Oct 19, 2026, 1:10 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

E-cigarette Cessation in Adults Who Co-use Cannabis

NCT06688539
View directory record Official record
Conditions
Nicotine Dependence, Tobacco Use Disorder
Interventions
Varenicline Pill, Contingency management, Counseling
Drug · Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 40 Years
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
3
States / cities
Charleston, South Carolina • Lancaster, South Carolina • Pickens, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 12, 2026 · Synced Oct 19, 2026, 1:10 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 23, 2022 · Synced Oct 19, 2026, 1:10 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

Combination of Dronabinol and Clonidine for Cannabis Dependence in Patients With Schizophrenia

NCT01598896
View directory record Official record
Conditions
Cannabis Dependence, Marijuana Dependence
Interventions
Dronabinol, Clonidine, Placebo
Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 45 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 29, 2018 · Synced Oct 19, 2026, 1:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cannabis Impairment Detection Application (CIDA)

NCT04230460
View directory record Official record
Conditions
Driving Under the Influence, Marijuana Intoxication, Alcohol Intoxication
Interventions
Cannabis (THC) (Inhaled) Placebo, Cannabis (High% THC) (Inhaled), Cannabis (Very High% THC) (Inhaled), Alcohol (oral)
Drug
Lead sponsor
Advanced Brain Monitoring, Inc.
Industry
Eligibility
18 Years to 50 Years
Enrollment
124 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 12, 2021 · Synced Oct 19, 2026, 1:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Developing and Strengthening Cannabis Warnings: Warning Message Testing

NCT07699198
View directory record Official record
Conditions
Cannabis, Marijuana Use
Interventions
Constituents, Cognitive Functioning, Cardiovascular Health, Motor Vehicle Crashes, Dependence, Psychosis and Schizophrenia, Mental Health, Reproductive Health, Respiratory Health, Edibles, Cannabis Hyperemesis Syndrome, Control
Behavioral
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
1,750 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 6, 2026 · Synced Oct 19, 2026, 1:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Mindfulness Mobile App to Reduce Adolescent Substance Use

NCT04027075
View directory record Official record
Conditions
Adolescent Drinking, Adolescent Problem Behavior
Interventions
Qlarity app users
Behavioral
Lead sponsor
Oregon Research Behavioral Intervention Strategies, Inc.
Industry
Eligibility
13 Years to 18 Years
Enrollment
257 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2023
U.S. locations
1
States / cities
Springfield, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 12, 2024 · Synced Oct 19, 2026, 1:10 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Validation of the Drug Impaired Driving Scenario (DIDS) on the CRCDS-miniSim

NCT04970342
View directory record Official record
Conditions
Driving Behavior, Driving Under the Influence
Interventions
Placebo (Lactose) Capsule, 0.75 mg Alprazolam Capsule, Cannabis (6.18% THC / <0.025% CBD), Cannabis (0%/ THC / 0% CBD)
Drug
Lead sponsor
Timothy L. Brown
Other
Eligibility
19 Years to 45 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 25, 2023 · Synced Oct 19, 2026, 1:10 PM EDT
Withdrawn Phase 1 Interventional

Trial of Computerized SBI to Reduce Teen Alcohol Use

NCT01784627
View directory record Official record
Conditions
Alcohol Abuse, Cannabis Abuse, Nicotine Dependence
Interventions
c-ASBI
Behavioral
Lead sponsor
Boston Children's Hospital
Other
Eligibility
9 Years to 20 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
6
States / cities
Boston, Massachusetts • Cambridge, Massachusetts • Lexington, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 7, 2016 · Synced Oct 19, 2026, 1:10 PM EDT
Completed No phase listed Observational

Cannabis Use Patterns Among Cancer Patients

NCT05132842
View directory record Official record
Conditions
Hematopoietic and Lymphoid Cell Neoplasm, Malignant Solid Neoplasm
Interventions
Survey Administration
Other
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
1,568 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 15, 2025 · Synced Oct 19, 2026, 1:10 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Alcohol and Cannabis Co-Use and the Gut-Brain Axis

NCT04998006
View directory record Official record
Conditions
Cannabis Use, Alcohol Use, Inflammation
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
21 Years to 60 Years
Enrollment
77 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 15, 2026 · Synced Oct 19, 2026, 1:10 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 4, 2025 · Synced Oct 19, 2026, 1:10 PM EDT
Completed No phase listed Observational

The Influence of in Utero Cannabis Exposure on Neonatal Brain Morphology and Structural Connectivity

NCT03718520
View directory record Official record
Conditions
Cannabis Use Disorder, PREG1, Drug Use, Fetal Exposure During Pregnancy, Neurodevelopmental Abnormality
Interventions
no intervention, this is a purely observational study
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years and older · Female only
Enrollment
168 participants
Timeline
2018 – 2020
U.S. locations
2
States / cities
Aurora, Colorado • Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 27, 2021 · Synced Oct 19, 2026, 1:10 PM EDT
Completed Not applicable Interventional

A Real-time, Contextual Intervention Using Mobile Technology to Reduce Marijuana Use in Youth

NCT01762696
View directory record Official record
Conditions
Marijuana Abuse
Interventions
MET, MOMENT
Behavioral
Lead sponsor
Boston Children's Hospital
Other
Eligibility
15 Years to 24 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
2
States / cities
Boston, Massachusetts • Jamaica Plain, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 12, 2016 · Synced Oct 19, 2026, 1:10 PM EDT