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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Marijuana Abuse Clear all
Withdrawn No phase listed Observational

Maternal Marijuana Use and Fetal and Infant Outcome

NCT04266314
View directory record Official record
Conditions
Cannabis Use Disorder, Pregnancy Related
Interventions
Maternal-fetal monitoring, NICU Network Neurobehavioral Scale
Device · Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 44 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 16, 2021 · Synced Jul 21, 2026, 6:45 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Cannabis Use Registry to Improve Overall Understanding of Symptoms (CURIOUS)

NCT07227324
View directory record Official record
Conditions
Cannabis Use, Cancer
Interventions
Not listed
Lead sponsor
HealthPartners Institute
Other
Eligibility
18 Years and older
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Saint Louis Park, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 11, 2025 · Synced Jul 21, 2026, 6:45 AM EDT
Completed No phase listed Observational

Exploring the Anti-inflammatory Properties of Cannabis and Their Relevance to Insulin Sensitivity

NCT04114903
View directory record Official record
Conditions
Type 2 Diabetes, Obesity, Cannabis Use, Insulin Sensitivity
Interventions
Study A: Single use of cannabis flower product, Study B: Ad libitum cannabis use for four weeks or no cannabis use
Other
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
21 Years to 40 Years
Enrollment
255 participants
Timeline
2019 – 2024
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 5, 2024 · Synced Jul 21, 2026, 6:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of Marijuana and Prescription Medications in Mood, Performance and Sleep

NCT00893269
View directory record Official record
Conditions
Marijuana Dependence
Interventions
eszopiclone, Placebo, ramelteon, zolpidem
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 55 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2010
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 4, 2013 · Synced Jul 21, 2026, 6:45 AM EDT
Completed Phase 2 Interventional Results available

Vilazodone Treatment for Marijuana Dependence

NCT01574183
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Vilazodone, Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 9, 2016 · Synced Jul 21, 2026, 6:45 AM EDT
Completed No phase listed Observational

Consequences of Marijuana Use in HIV-infected Youth

NCT03927053
View directory record Official record
Conditions
Youth With HIV
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
21 Years to 28 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
2
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 12, 2023 · Synced Jul 21, 2026, 6:45 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Marijuana's Impact on Alcohol Motivation and Consumption

NCT02983773
View directory record Official record
Conditions
Alcohol Drinking, Marijuana
Interventions
THC 7.2%, THC 3.1%, Placebo
Drug
Lead sponsor
Brown University
Other
Eligibility
21 Years to 44 Years
Enrollment
157 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Jul 21, 2026, 6:45 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Brain Mechanisms Supporting Cannabis-induced Pain Relief

NCT04982965
View directory record Official record
Conditions
Sciatica, Lumbar Radiculopathy, Lower Back Pain, Degenerative Disc Disease, Chronic Low-back Pain (cLBP), Chronic Low Back and Leg Pain, Back Pain
Interventions
Active Cannabis, Placebo Cannabis
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Jul 21, 2026, 6:45 AM EDT
Active, not recruiting Not applicable Interventional

Breathwork-assisted Treatment for Cannabis Use Disorder

NCT05219825
View directory record Official record
Conditions
Addiction, Substance Abuse, Cannabis Use Disorder, Cannabis Use, Cannabis Dependence, Cannabis Abuse
Interventions
Breathwork workshop
Behavioral
Lead sponsor
Elias Dakwar
Other
Eligibility
18 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Jul 21, 2026, 6:45 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Pregnenolone as a Treatment for Cannabis Intoxication

NCT07216690
View directory record Official record
Conditions
Cannabis Intoxication
Interventions
Cannabis, Pregnenolone 250 mg, Pregnenolone 500 mg, Placebo, Placebo brownie
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Jul 21, 2026, 6:45 AM 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 28, 2024 · Synced Jul 21, 2026, 6:45 AM EDT
Completed Phase 2 Interventional

Maximizing the Efficacy of Cognitive Behavior Therapy and Contingency Management

NCT00350649
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Standard CBT, CBT+CM/adherence, CM/abstinence, CM/abstinence+CBT
Behavioral
Lead sponsor
Yale University
Other
Eligibility
18 Years to 65 Years
Enrollment
205 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 26, 2011 · Synced Jul 21, 2026, 6:45 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

iSTART: A Campus & Community Initiative for Services in Tec-health

NCT05362357
View directory record Official record
Conditions
Substance Use, Binge Drinking, Marijuana Use, Alcohol Drinking, Prescription Opioid Misuse, Illicit Drug Use
Interventions
iSTART Web-app
Behavioral
Lead sponsor
California State University, Northridge
Other
Eligibility
18 Years to 30 Years
Enrollment
1,100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Northridge, California
Source: ClinicalTrials.gov public record
Updated Feb 6, 2024 · Synced Jul 21, 2026, 6:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Pharmacokinetic and Pharmacodynamic Effects of Oral Cannabidiol (CBD) Under Acute and Chronic Exposure Conditions

NCT04283019
View directory record Official record
Conditions
Cannabis, Drug Effects
Interventions
CBD, THC
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 55 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 6, 2024 · Synced Jul 21, 2026, 6:45 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

CB1R in Synthetic Psychoactive Cannabinoids

NCT03539575
View directory record Official record
Conditions
Drug Dependence
Interventions
[11-C]OMAR
Other
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Jul 21, 2026, 6:45 AM 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 24, 2014 · Synced Jul 21, 2026, 6:45 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Nabilone in Cannabis Users With PTSD

NCT03251326
View directory record Official record
Conditions
Cannabis, Post Traumatic Stress Disorder
Interventions
Nabilone, Cannabis, Propranolol, Placebo
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 14, 2022 · Synced Jul 21, 2026, 6:45 AM 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, 6:45 AM EDT
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, 6:45 AM EDT
Completed Phase 2 Interventional Results available

A Study of Tolerability and Efficacy of Cannabidiol on Motor Symptoms in Parkinson's Disease

NCT03582137
View directory record Official record
Conditions
Parkinson Disease
Interventions
Cannabidiol, Placebo
Drug · Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
40 Years to 85 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 22, 2024 · Synced Jul 21, 2026, 6:45 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, 6:45 AM EDT
Completed Phase 1Phase 2 Interventional

Short-Term Effects of Medicinal Cannabis Therapy on Spasticity in Multiple Sclerosis

NCT00248378
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Smoked Cannabis
Drug
Lead sponsor
Center for Medicinal Cannabis Research
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2005
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jun 22, 2006 · Synced Jul 21, 2026, 6:45 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, 6:45 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Vaporization as a Smokeless Cannabis Delivery System

NCT00241592
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Cannabis
Drug
Lead sponsor
Center for Medicinal Cannabis Research
Other
Eligibility
21 Years to 45 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2005
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 13, 2007 · Synced Jul 21, 2026, 6:45 AM EDT