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ClinicalTrials.gov public records Last synced Oct 22, 2026, 4:09 AM EDT

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Showing 241–264 of 610 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Marijuana Clear all
Completed Not applicable Interventional Accepts healthy volunteers

THC Crossover Study

NCT04429568
View directory record Official record
Conditions
THC, Cannabis, Cannabis Smoking, Cannabis Use, Unspecified, Cigarette Smoking, Tobacco Use, Nicotine Dependence, Nicotine Withdrawal, Cardiovascular Risk Factor
Interventions
Smoked Cannabis, Vaped Cannabis, Tobacco Cigarette
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years and older
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jul 1, 2024 · Synced Oct 22, 2026, 4:09 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Development of an Alcohol, Cannabis, and Sexual Assault Risk Reduction Program for High Risk College Women

NCT07726004
View directory record Official record
Conditions
Enhanced Assess, Acknowledge, and Act Sexual Assault Resistance Program With Alcohol and Cannabis Content
Interventions
Enhanced Assess, Acknowledge, and Act Sexual Assault Resistance Program, Assessment Only Control
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 24 Years · Female only
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 24, 2026 · Synced Oct 22, 2026, 4:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Eye Movement Tracking to Detect Impairment Due to Acute Cannabis Intoxication

NCT04799093
View directory record Official record
Conditions
Impairment, Cannabis Intoxication
Interventions
EyeBOX
Diagnostic Test
Lead sponsor
Oculogica, Inc.
Industry
Eligibility
18 Years and older
Enrollment
225 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Westport, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 13, 2021 · Synced Oct 22, 2026, 4:09 AM EDT
Completed No phase listed Observational Results available

Brain Nicotine Receptor Density in Veteran Smokers

NCT01721473
View directory record Official record
Conditions
Positron Emission Tomography
Interventions
positron emission tomography scan
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years to 65 Years
Enrollment
184 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
2
States / cities
San Diego, California • West Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 7, 2019 · Synced Oct 22, 2026, 4:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effect of Lofexidine and Oral THC on Marijuana Withdrawal and Relapse

NCT00373503
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Lofexidine, dronabinol, Marijuana
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 5, 2013 · Synced Oct 22, 2026, 4:09 AM 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, 4:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cannabis Observations on Brain Waves, Retrieval, and Attention: Experiment 3

NCT06669585
View directory record Official record
Conditions
Cannabis, Memory, Electroencephalography
Interventions
Cannabis (smoked flower)
Drug
Lead sponsor
L. Cinnamon Bidwell
Other
Eligibility
21 Years to 40 Years
Enrollment
96 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Oct 22, 2026, 4:09 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Trial of Cannabis for Essential Tremor

NCT03805750
View directory record Official record
Conditions
Essential Tremor
Interventions
CBD/THC, Placebo oral capsule
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
21 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Oct 13, 2022 · Synced Oct 22, 2026, 4:09 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Measuring Environmental Tobacco and Cannabis: Pollutants and Exposures

NCT06030674
View directory record Official record
Conditions
Healthy
Interventions
Secondhand cannabis emissions/smoke exposure
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 50 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Oct 22, 2026, 4:09 AM EDT
Completed No phase listed Observational

Effects of Marijuana Used on Lung Function in Persons With Chronic Obstructive Pulmonary Disease (COPD)

NCT01096303
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Not listed
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
25 Years to 90 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 15, 2017 · Synced Oct 22, 2026, 4:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Personalized Health Assessment Related to Medications (Project PHARM)

NCT03037476
View directory record Official record
Conditions
Feedback, Psychological, Clinical Trial, Substance Abuse
Interventions
Web-based PFI, Assessment Only
Behavioral
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 25 Years
Enrollment
843 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 1, 2023 · Synced Oct 22, 2026, 4:09 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Cannabinoids and Cerebellar-Motor Functioning

NCT01853020
View directory record Official record
Conditions
Cannabis, Psychotic Disorders
Interventions
THC, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 35 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 22, 2026, 4:09 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Precision Brain Stimulation to Reduce Cannabis Craving in Schizophrenia

NCT07196462
View directory record Official record
Conditions
Cannabis Use, SCHIZOPHRENIA, Psychosis, rTMS
Interventions
3 Minute iTBS to the L DLPFC, One-Minute, Personalized, DMN Targeted CTBS
Device
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Oct 22, 2026, 4:09 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Effect of Cannabis on E-Cigarette Use Behavior

NCT06609109
View directory record Official record
Conditions
Cannabis Use, Tobacco Use, Electronic Cigarette Use
Interventions
THC High Dose, THC Low Dose, THC 0mg, E-Cigarette Full Nicotine, E-Cigarette Placebo Nicotine
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 9, 2026 · Synced Oct 22, 2026, 4:09 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Aging and Marijuana: Benefits, Effects, and Risks

NCT05188404
View directory record Official record
Conditions
Cannabis Use
Interventions
Choice of cannabis product
Behavioral
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
60 Years and older
Enrollment
326 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 18, 2025 · Synced Oct 22, 2026, 4:09 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Imaging Cannabinoid Receptors Using Positron Emission Tomography (PET) Scanning

NCT01730781
View directory record Official record
Conditions
Schizophrenia, Cannabis Dependence, Prodromal for Psychotic Illness, Family History of Alcoholism, Healthy Control, Opioid-use Disorder, Post Traumatic Stress Disorder
Interventions
[11-C]OMAR
Radiation
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years · Male only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Oct 22, 2026, 4:09 AM EDT
Not listed Phase 1Phase 2 Interventional Accepts healthy volunteers

The Effect of Pollen Season on Subcutaneous Allergen Immunotherapy Reactions

NCT01878929
View directory record Official record
Conditions
Allergic Rhinitis, Asthma, Allergic Conjunctivitis
Interventions
Allergen(Tree, Grass, Weeds)
Drug
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
5 Years and older
Enrollment
245 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
South Euclid, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 17, 2013 · Synced Oct 22, 2026, 4:09 AM 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 22, 2026, 4:09 AM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Understanding the Clinical Pharmacology of Marijuana-Tobacco Co-administration

NCT05999383
View directory record Official record
Conditions
THC, Cannabis, Cannabis Use, Cannabis Smoking, Tobacco Use, Vaping
Interventions
Cannabis, Nicotine, Pax Loose Leaf Vaporizer, Placebo Marijuana
Drug · Device · Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jan 7, 2026 · Synced Oct 22, 2026, 4:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Comparative Pharmacokinetic and Pharmacodynamic Effects of Delta-8 and Delta-9 THC

NCT05287256
View directory record Official record
Conditions
Behavioral Pharmacology of Cannabis
Interventions
Oral Delta-8-THC Cannabis, Oral Delta-9-THC Cannabis, Oral Placebo, Vaporized Delta-8-THC Cannabis, Vaporized Delta-9-THC Cannabis, Vaporized Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 45 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Oct 22, 2026, 4:09 AM EDT
Not listed Not applicable Interventional

Computer-delivered Psychosocial Intervention for Adolescent Substance Use Disorders

NCT00957775
View directory record Official record
Conditions
Substance-Related Disorders, Alcohol-Related Disorders, Marijuana Abuse
Interventions
Usual care, Computer-delivered ACRA
Behavioral
Lead sponsor
National Development and Research Institutes, Inc.
Other
Eligibility
12 Years to 18 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 12, 2009 · Synced Oct 22, 2026, 4:09 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

The Effect of Food on the Oral Bioavailability of AEF0117 in Healthy Volunteers

NCT05451017
View directory record Official record
Conditions
Marijuana Abuse
Interventions
3ß-(4-methoxybenzyloxy)pregn-5-en-20-one in fed condition, 3ß-(4-methoxybenzyloxy)pregn-5-en-20-one in fasting condition
Drug
Lead sponsor
Aelis Farma
Industry
Eligibility
18 Years to 55 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Oct 22, 2026, 4:09 AM EDT
Completed Phase 2 Interventional

Atomoxetine for the Treatment of Cannabis Dependence

NCT00167297
View directory record Official record
Conditions
Cannabis Dependence
Interventions
Atomoxetine
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2005
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 11, 2017 · Synced Oct 22, 2026, 4:09 AM EDT
Completed Phase 4 Interventional Results available

Treatment of Schizophrenia and Comorbid Cannabis Use Disorder: Comparing Clozapine to Treatment-as-Usual

NCT00498550
View directory record Official record
Conditions
Schizophrenia, Dual Diagnosis, Schizoaffective Disorder, Psychotic Disorder, Cannabis Abuse
Interventions
Clozapine, Treatment as usual
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2009
U.S. locations
4
States / cities
Los Angeles, California • Kansas City, Missouri • Manchester, New Hampshire + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2019 · Synced Oct 22, 2026, 4:09 AM EDT