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ClinicalTrials.gov public records Last synced Oct 22, 2026, 4:56 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 289–312 of 611 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Marijuana Clear all
Completed Not applicable Interventional

Treatment for Teens With Alcohol Abuse and Depression

NCT02227589
View directory record Official record
Conditions
AOD Use, Abuse, and Dependence, Depression
Interventions
MET/CBT-12, CBT-D, D-TAU
Behavioral · Other
Lead sponsor
Duke University
Other
Eligibility
13 Years to 263 Months
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
2
States / cities
Farmington, Connecticut • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 5, 2020 · Synced Oct 22, 2026, 4:56 PM EDT
Completed No phase listed Observational

Medical Marijuana in the Pediatric Central Nervous System Tumor Population

NCT03052738
View directory record Official record
Conditions
Central Nervous System Tumor, Brain Tumor, Spinal Tumor
Interventions
Not listed
Lead sponsor
University of Colorado, Denver
Other
Eligibility
2 Years to 18 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Aug 29, 2024 · Synced Oct 22, 2026, 4:56 PM EDT
Not yet recruiting Not applicable Interventional

Substance Use in Assault-Injured Young Adults

NCT07070414
View directory record Official record
Conditions
Alcohol Misuse, Cannabis Misuse
Interventions
Brief Negotiation Interview intervention (BNI) (adapted)
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 25 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2028
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Oct 22, 2026, 4:56 PM EDT
Completed Not applicable Interventional

Peer Approaches to Substances in Early Psychosis Programs: A Pilot Study of a Peer-Led Intervention

NCT04517279
View directory record Official record
Conditions
Psychotic Disorders, Substance Use
Interventions
Peer Approach to Substances in Early Psychosis Programs, Usual Care Peer Services
Behavioral
Lead sponsor
University of Texas at Austin
Other
Eligibility
15 Years to 32 Years
Enrollment
113 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
15
States / cities
Austin, Texas • Beaumont, Texas • Big Spring, Texas + 12 more
Source: ClinicalTrials.gov public record
Updated Dec 19, 2025 · Synced Oct 22, 2026, 4:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Development of a Videogame Prototype Targeting Cigarette and Marijuana Smoking, and Tobacco Product Prevention Among Young Adolescents (smokeScreen)

NCT03722888
View directory record Official record
Conditions
Smoking
Interventions
smokeSCREEN video game
Device
Lead sponsor
Yale University
Other
Eligibility
11 Years to 14 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
3
States / cities
Hamden, Connecticut • New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 29, 2018 · Synced Oct 22, 2026, 4:56 PM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

Endourage Complete Spectrum Oral Mucosal Drops (OMD) in Adults Desiring a Reduction in Ethanol Use

NCT04659278
View directory record Official record
Conditions
Alcohol Drinking, Alcohol Use, Unspecified, Alcohol Abstinence, Alcohol-Related Disorders
Interventions
Endourage 1200 mg OMD ™ Oral Mucosal Drops, Isolate, Placebo, Peppermint Oil, masking flavor
Dietary Supplement · Other
Lead sponsor
Endourage, LLC
Industry
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Novato, California
Source: ClinicalTrials.gov public record
Updated Aug 7, 2025 · Synced Oct 22, 2026, 4:56 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Cannabis for Spasticity in Multiple Sclerosis

NCT00682929
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Inhaled Cannabis, Oral THC, Oral Placebo, Inhaled placebo
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
21 Years and older
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2011
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 18, 2018 · Synced Oct 22, 2026, 4:56 PM EDT
Completed Phase 2 Interventional

Cannabidiol for Reduction of Brain Neuroinflammation

NCT05066308
View directory record Official record
Conditions
Back Pain, Depressive Symptoms
Interventions
CBD, Placebo
Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 75 Years
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 15, 2026 · Synced Oct 22, 2026, 4:56 PM EDT
Completed Not applicable Interventional Results available

An App to Reduce Cannabis Use Among Emerging Adults

NCT05824754
View directory record Official record
Conditions
Cannabis Use
Interventions
Just-In-Time-Adaptive-Intervention (JITAI)
Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 25 Years
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 12, 2025 · Synced Oct 22, 2026, 4:56 PM EDT
Not listed Phase 1Phase 2 Interventional Accepts healthy volunteers

THC Memory & Reward Learning Pilot

NCT05116527
View directory record Official record
Conditions
Marijuana, THC, Cannabis
Interventions
Marijuana, Hash, THC, or Grass, Placebo
Drug
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 17, 2025 · Synced Oct 22, 2026, 4:56 PM EDT
Completed Not applicable Interventional Results available

Brief Intervention Combined With Health Coaching Via Social Media for Cannabis Use

NCT04316741
View directory record Official record
Conditions
Cannabis Use
Interventions
Snapcoach
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 25 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Flint, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 30, 2022 · Synced Oct 22, 2026, 4:56 PM 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 7, 2016 · Synced Oct 22, 2026, 4:56 PM EDT
Completed Phase 2 Interventional Results available

UH3 Varenicline for Cannabis Use Disorder

NCT03980561
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Varenicline, Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
174 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
2
States / cities
Charleston, South Carolina • Pickens, South Carolina
Source: ClinicalTrials.gov public record
Updated Jan 18, 2024 · Synced Oct 22, 2026, 4:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Inhaled Cannabis on Driving Performance

NCT01620177
View directory record Official record
Conditions
Alcohol Drinking, Cannabis
Interventions
Alcohol(oral) and placebo, Cannabis(THC)(Inhaled) and Placebo
Drug
Lead sponsor
Gary R Gaffney
Other
Eligibility
21 Years to 55 Years
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated May 2, 2018 · Synced Oct 22, 2026, 4:56 PM EDT
Completed Not applicable Interventional

Adaptive Treatment for Adolescent Cannabis Use Disorders

NCT01656707
View directory record Official record
Conditions
Mental Disorders, Addictive Behaviors, Cannabis Use Disorder
Interventions
ACRA, CBT
Behavioral
Lead sponsor
UConn Health
Other
Eligibility
13 Years to 18 Years
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 11, 2017 · Synced Oct 22, 2026, 4:56 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Alcohol and Cannabis Concentrates Co-Administration

NCT05999344
View directory record Official record
Conditions
Alcohol Use Disorder, Cannabis Use
Interventions
commercially available cannabis administered prior to commercially available alcohol, commercially available alcohol administered prior to commercially available cannabis
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
21 Years to 65 Years
Enrollment
146 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 18, 2025 · Synced Oct 22, 2026, 4:56 PM 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 8, 2008 · Synced Oct 22, 2026, 4:56 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Clinician Practice Companion to Address Youth Substance Use

NCT07725289
View directory record Official record
Conditions
Substance Use, Substance-Related Disorders, Adolescent Substance Use, Cannabis Use, Opioid Use Disorder, Drug Overdose, Overdose Prevention, Co-occurring Mental Health Conditions
Interventions
Practice Companion
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
14 Years to 24 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2027 – 2029
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 22, 2026, 4:56 PM EDT
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 14, 2026 · Synced Oct 22, 2026, 4:56 PM EDT
Recruiting No phase listed Observational

Study of an Oral Fluid Testing Approach

NCT06891235
View directory record Official record
Conditions
Cannabis Use, Cannabis Intoxication, Cannabis Use Disorder
Interventions
Biologic testing for THC
Other
Lead sponsor
Boston Children's Hospital
Other
Eligibility
18 Years to 35 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 22, 2026 · Synced Oct 22, 2026, 4:56 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Health Outcomes by Neighborhood - Baltimore

NCT01571752
View directory record Official record
Conditions
Stigma, Activity Space, Social Networks, HIV Status, Drug Abuse/Dependence
Interventions
Not listed
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 100 Years
Enrollment
1,651 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Oct 22, 2026, 4:56 PM 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 19, 2021 · Synced Oct 22, 2026, 4:56 PM EDT
Suspended Phase 2 Interventional Accepts healthy volunteers

Repeated Administration of Cannabis Varying in THC and CBD

NCT05563948
View directory record Official record
Conditions
Cannabis
Interventions
Cannabis
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2034
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 1, 2026 · Synced Oct 22, 2026, 4:56 PM EDT
Completed Not applicable Interventional

Motivational Interviews for Incarcerated Teens - 1

NCT00227916
View directory record Official record
Conditions
Alcoholic Intoxication, Marijuana Abuse
Interventions
Behavior Therapy
Behavioral
Lead sponsor
Brown University
Other
Eligibility
14 Years to 19 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2004
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Sep 25, 2014 · Synced Oct 22, 2026, 4:56 PM EDT