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Showing 1–24 of 230 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Cannabis placebo Clear all
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effect of Baclofen on Marijuana Withdrawal and Relapse

NCT00373295
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Baclofen, Marijuana, Placebo
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 9, 2017 · Synced Sep 22, 2026, 10:00 AM EDT
Completed Phase 4 Interventional Results available

Buspirone Treatment for Marijuana Dependence

NCT00875836
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Buspirone, Placebo
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
175 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2016
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Aug 9, 2016 · Synced Sep 22, 2026, 10:00 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Acute Effects of Cannabis on Everyday Life Memory

NCT05488509
View directory record Official record
Conditions
Cannabis Use
Interventions
Cannabis, Placebo
Drug
Lead sponsor
Washington State University
Other
Eligibility
21 Years and older
Enrollment
121 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Pullman, Washington
Source: ClinicalTrials.gov public record
Updated Nov 23, 2025 · Synced Sep 22, 2026, 10:00 AM EDT
Completed Phase 2 Interventional

Efficacy of Inhaled Cannabis for Acute Migraine Treatment

NCT04360044
View directory record Official record
Conditions
Migraine, Cannabis, THC, CBD
Interventions
THC ~5%, CBD ~12%, THC ~5% and CBD ~12%, Sham Cannabis
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 65 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Feb 27, 2023 · Synced Sep 22, 2026, 10:00 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 8, 2026 · Synced Sep 22, 2026, 10:00 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Comparison of the Analgesic Effects of Dronabinol and Smoked Marijuana in Daily Marijuana Smokers

NCT00743119
View directory record Official record
Conditions
Pain Threshold, Mood
Interventions
Placebo capsules, Inactive marijuana (0% THC), Low dose Dronabinol, High dose Dronabinol, Low THC marijuana, High THC marijuana
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 10, 2017 · Synced Sep 22, 2026, 10:00 AM EDT
Recruiting Phase 2 Interventional

Cannabidiol and Cannabis Concentrate Users

NCT06575751
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Broad Spectrum Cannabidiol (bsCBD) 400 mg, Broad Spectrum Cannabidiol (bsCBD) 200 mg, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
25 Years to 60 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Sep 22, 2026, 10:00 AM EDT
Completed Phase 1Phase 2 Interventional

Effects of Smoked Marijuana on Neuropathic Pain

NCT00254761
View directory record Official record
Conditions
Neuropathic Pain
Interventions
Cannabis
Drug
Lead sponsor
Center for Medicinal Cannabis Research
Other
Eligibility
18 Years to 70 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Feb 27, 2008 · Synced Sep 22, 2026, 10:00 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Age-Related Effects of THC

NCT04294966
View directory record Official record
Conditions
Tolerance, Adolescent Behavior, THC
Interventions
Dextrose, Dronabinol
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 40 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
2
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 8, 2023 · Synced Sep 22, 2026, 10:00 AM EDT
Recruiting Phase 1 Interventional

THC Effects on Glucose in Type 2 Diabetes

NCT05322213
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
THC, Placebo
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years to 70 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Sep 22, 2026, 10:00 AM EDT
Completed Phase 1 Interventional

Safety and Effects on Responses to Stress and Pain of Natural Medical Marijuana Products

NCT04226690
View directory record Official record
Conditions
Pain
Interventions
Active CBD/THC Dose 1, Active CBD/THC Dose 2, matched placebo comparator
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 68 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jul 18, 2024 · Synced Sep 22, 2026, 10:00 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Ph1 Marinol Interaction Study - Part 2 - 1

NCT00490269
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Placebo, Dronabinol
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 45 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Sep 22, 2026, 10:00 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Icariin to Prevent Corticosteroid-related Memory Changes

NCT02112123
View directory record Official record
Conditions
the Pharmacokinetic Profile of Icariin in Humans
Interventions
Icariin, Matching placebo
Drug · Dietary Supplement
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 50 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 17, 2017 · Synced Sep 22, 2026, 10:00 AM EDT
Completed Phase 2 Interventional Results available

Effectiveness of Fluoxetine in Young People for the Treatment of Major Depression and Marijuana Dependence

NCT00149643
View directory record Official record
Conditions
Depressive Disorder, Major, Cannabis Abuse
Interventions
Fluoxetine, Placebo
Drug · Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
14 Years to 25 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2012
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 23, 2013 · Synced Sep 22, 2026, 10:00 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Ethanol and Cannabinoid Effects on Simulated Driving and Related Cognition

NCT02404688
View directory record Official record
Conditions
Cannabis, Alcohol Effect, Driving Under the Influence of Alcohol and Other Drugs
Interventions
Active delta-9-THC, Placebo, Active Ethanol
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 22, 2026, 10:00 AM EDT
Recruiting Phase 2 Interventional

Clinical Trial on Agitation in Alzheimer's Dementia

NCT05543681
View directory record Official record
Conditions
Alzheimer Disease, Agitation,Psychomotor, Care Giving Burden, NPS, Aggression
Interventions
IGC-AD1-Active, IGC-AD1-Placebo
Drug
Lead sponsor
IGC Pharma, LLC
Industry
Eligibility
60 Years and older
Enrollment
164 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
23
States / cities
Maitland, Florida • Melbourne, Florida • Miami, Florida + 17 more
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Sep 22, 2026, 10:00 AM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Cannabis Consumption and Driving Impairment Assessment on a Closed Course

NCT06059677
View directory record Official record
Conditions
Cannabis Smoking, Driving Impaired
Interventions
Active smoked cannabis, Placebo smoked cannabis
Drug
Lead sponsor
Bayliss J. Camp, PhD
Government
Eligibility
21 Years to 55 Years
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Sep 22, 2026, 10:00 AM EDT
Recruiting Phase 2 Interventional

A Study of Cannabidiol in Young Adult Cannabis Users

NCT06569394
View directory record Official record
Conditions
Cannabis Use Disorder
Interventions
Broad Spectrum Cannabidiol (bsCBD) 400 mg, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 25 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Sep 22, 2026, 10:00 AM EDT
Recruiting Phase 3 Interventional Accepts healthy volunteers

Cannabis-Tobacco Co-Use Treatment Study

NCT06883162
View directory record Official record
Conditions
Tobacco Use Disorder, Tobacco Use Cessation, Cannabis Use, Cannabis Use Disorder, Marijuana Use
Interventions
Varenicline, Counseling, Psychosocial modules
Drug · Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Sep 22, 2026, 10:00 AM 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 Sep 22, 2026, 10:00 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

CBDV vs Placebo in Children and Adults up to Age 30 With Prader-Willi Syndrome (PWS)

NCT03848481
View directory record Official record
Conditions
Prader-Willi Syndrome
Interventions
CBDV Compound, Placebo
Drug
Lead sponsor
Eric Hollander
Other
Eligibility
5 Years to 30 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Sep 22, 2026, 10:00 AM EDT
Completed Not applicable Interventional Results available

Effects of Botanical Microglia Modulators in Gulf War Illness

NCT02909686
View directory record Official record
Conditions
Gulf War Illness
Interventions
Boswellia Serrata, Curcumin, Epimedium, Fisetin, Luteolin, Nettle, Pycnogenol, Reishi Mushroom, Resveratrol, Placebo
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
39 Years to 65 Years · Male only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jan 23, 2025 · Synced Sep 22, 2026, 10:00 AM EDT
Completed No phase listed Observational

Marijuana Drug Discrimination and Self-Administration

NCT00943930
View directory record Official record
Conditions
Marijuana Abuse
Interventions
THC (delta-9 tetrahydrocannabinol), d-amphetamine, oral THC
Drug
Lead sponsor
Wayne State University
Other
Eligibility
21 Years to 45 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2014
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Apr 27, 2016 · Synced Sep 22, 2026, 10:00 AM EDT
Completed Not applicable Interventional Results available

Effect of Oxytocin on Craving and Therapy Response

NCT01827332
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Oxytocin, Saline
Drug
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jan 1, 2017 · Synced Sep 22, 2026, 10:00 AM EDT