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ClinicalTrials.gov public records Last synced Oct 22, 2026, 5:23 AM EDT

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Showing 241–264 of 337 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Marijuana Use Clear all
Completed Phase 2 Interventional Results available

Effect of Clonazepam on Cannabis Withdrawal and Relapse in Treatment-seeking Patients

NCT02913924
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Clonazepam, Placebo
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
18 Years to 65 Years
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 6, 2021 · Synced Oct 22, 2026, 5:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Development of a Lifestyle Physical Activity Intervention to Reduce Risk for Perinatal Cannabis Use

NCT05528380
View directory record Official record
Conditions
Pregnancy, Cannabis
Interventions
LPA + Fitbit Intervention
Behavioral
Lead sponsor
Butler Hospital
Other
Eligibility
18 Years and older · Female only
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Oct 22, 2026, 5:23 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Cannabis and Schizophrenia: Self-Medication and Agonist Treatment

NCT00946348
View directory record Official record
Conditions
Schizophrenia, Dual Diagnosis, Schizoaffective Disorder, Psychotic Disorder, Cannabis Use Disorder
Interventions
Dronabinol, Cannabis
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jul 12, 2021 · Synced Oct 22, 2026, 5:23 AM EDT
Completed Phase 4 Interventional Results available

Efficacy Study of Quetiapine Plus Topiramate for Reducing Cannabis Consumption and Bipolar Mania

NCT00393978
View directory record Official record
Conditions
Bipolar Disorder, Cannabis-Related Disorder
Interventions
Quetiapine and placebo, Quetiapine and Topiramate
Drug
Lead sponsor
University of Cincinnati
Other
Eligibility
12 Years to 21 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2014
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 26, 2017 · Synced Oct 22, 2026, 5:23 AM EDT
Completed Not applicable Interventional

Gender/Sex & CUD Remission

NCT04964739
View directory record Official record
Conditions
Cannabis Use Disorder, Mild, Cannabis Use Disorder, Moderate, Cannabis Use Disorder, Severe
Interventions
Cognitive Behavioral Therapy (CBT4CBT)
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
224 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 10, 2025 · Synced Oct 22, 2026, 5:23 AM EDT
Completed Not applicable Interventional Results available

Investigating Two rTMS Strategies to Treat Cannabis Use Disorder

NCT05720312
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Repetitive Transcranial Magnetic Stimulation (rTMS)
Device
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 60 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated May 28, 2025 · Synced Oct 22, 2026, 5:23 AM EDT
Not listed Phase 2 Interventional

Safety and Efficacy of Inhaled Cannabis For the Uncontrolled Pain Relief in Patients With Advanced Cancer

NCT04042545
View directory record Official record
Conditions
Cancer Pain, Quality of Life, Pain, Acute, Cannabis Use
Interventions
PPP001, Placebo
Drug
Lead sponsor
Tetra Bio-Pharma
Industry
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Cave Creek, Arizona
Source: ClinicalTrials.gov public record
Updated Sep 16, 2021 · Synced Oct 22, 2026, 5:23 AM EDT
Completed Phase 4 Interventional Results available

Cannabis and Tobacco Co-use Study

NCT04228965
View directory record Official record
Conditions
Tobacco Use Disorder
Interventions
Varenicline, Contingency Management, Counseling
Drug · Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 40 Years
Enrollment
181 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2024
U.S. locations
3
States / cities
Charleston, South Carolina • Florence, South Carolina • Pickens, South Carolina
Source: ClinicalTrials.gov public record
Updated Jun 15, 2025 · Synced Oct 22, 2026, 5:23 AM EDT
Not yet recruiting Phase 1Phase 2 Interventional

Pregnenolone for Cannabis Use Disorder and Depression

NCT07685964
View directory record Official record
Conditions
Cannabis Use Disorder, Major Depressive Disorder (MDD)
Interventions
Pregnenolone
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
2
States / cities
Dallas, Texas • Richardson, Texas
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Oct 22, 2026, 5:23 AM EDT
Recruiting Not applicable Interventional

Targeting Insomnia to Improve Outcomes in Adults With Problematic Cannabis Use

NCT05814822
View directory record Official record
Conditions
Insomnia
Interventions
Cognitive Behavioral Therapy for insomnia (CBTi-CB-TM), Sleep Hygiene Education (SHE-TM)
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
21 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 22, 2026 · Synced Oct 22, 2026, 5:23 AM EDT
Completed Phase 2 Interventional

Gabapentin for Restoring GABA/Glutamate Homeostasis in Co-occurring Bipolar and Cannabis Use Disorders

NCT05064319
View directory record Official record
Conditions
Bipolar Disorder, Cannabis Use, Schizoaffective Disorder, Bipolar Type, Bipolar I Disorder, Bipolar II Disorder, Cannabis Use Disorder, Mild, Cannabis Use Disorder, Moderate, Cannabis Use Disorder, Severe
Interventions
Gabapentin, Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 22, 2026, 5:23 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 15, 2026 · Synced Oct 22, 2026, 5:23 AM EDT
Completed Not applicable Interventional

Mobile Intervention for Simultaneous Alcohol and Marijuana Use in Young Adults

NCT05991882
View directory record Official record
Conditions
Alcohol Drinking, Cannabis Use
Interventions
Condition 1: Craving daily+PBS daily, Condition 2: Craving daily+PBS trigger, Condition 3: Craving trigger+PBS daily, Condition 4: Craving trigger+PBS trigger, Condition 5: PBS daily+ PBS trigger, Condition 6: Craving daily+Craving trigger, Condition 7: Craving daily+Craving trigger+PBS daily+PBS trigger, Condition 8: No daily or trigger craving or PBS
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years to 30 Years
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 22, 2026, 5:23 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Cannabis Association With Sleep Study

NCT06982950
View directory record Official record
Conditions
Sleep
Interventions
Manipulation of Sleep Duration
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
21 Years to 29 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2032
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Oct 19, 2026 · Synced Oct 22, 2026, 5:23 AM EDT
Active, not recruiting Not applicable Interventional

Evaluation of a Brief Computerized and Smart Phone-based Intervention for Stress in Regular Cannabis Users

NCT06085222
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Emotional Engagement Distress Tolerance Intervention, Health Education Intervention
Behavioral
Lead sponsor
Florida State University
Other
Eligibility
18 Years to 30 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Tallahassee, Florida
Source: ClinicalTrials.gov public record
Updated Oct 20, 2026 · Synced Oct 22, 2026, 5:23 AM 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 5, 2025 · Synced Oct 22, 2026, 5:23 AM 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 22, 2026, 5:23 AM EDT
Completed Phase 2 Interventional Results available

A Preliminary Investigation of Pre-Frontal Repetitive Transcranial Magnetic Stimulation (rTMS) for the Treatment of Cannabis Use Disorder

NCT03144232
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Active rTMS, Sham rTMS
Device
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 60 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Aug 9, 2023 · Synced Oct 22, 2026, 5:23 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 6, 2009 · Synced Oct 22, 2026, 5:23 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 11, 2025 · Synced Oct 22, 2026, 5:23 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Behavioral Economic Analysis of Demand for Marijuana

NCT03518567
View directory record Official record
Conditions
Marijuana Smoking
Interventions
Smoked marijuana cigarettes: High THC dose (6% THC)
Drug
Lead sponsor
Brown University
Other
Eligibility
18 Years to 50 Years
Enrollment
133 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Feb 12, 2024 · Synced Oct 22, 2026, 5:23 AM EDT
Completed No phase listed Observational

Questionnaires in Assessing Attitudes About Legalization of Marijuana Use in Participants With Cancer

NCT03360799
View directory record Official record
Conditions
Malignant Neoplasm
Interventions
Questionnaire Administration
Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
2
States / cities
Gilbert, Arizona • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 30, 2019 · Synced Oct 22, 2026, 5:23 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 23, 2019 · Synced Oct 22, 2026, 5:23 AM EDT
Suspended Not applicable Interventional Accepts healthy volunteers

Cannabis THC Potency, Metabolism, and Cognitive Impairment in Young Adults

NCT06077292
View directory record Official record
Conditions
Cannabis Use, THC, Marijuana Use, Cognitive Impairment, THC Vaping
Interventions
15% THC Potency Reduction, 35% THC Potency Reduction
Behavioral
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 25 Years
Enrollment
110 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Oct 22, 2026, 5:23 AM EDT