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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: marijuana cigarette Clear all
Completed Not applicable Interventional Accepts healthy volunteers Results available

Hormones and Reduction in Co-users of Marijuana and Nicotine

NCT02579421
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Progesterone, placebo
Drug
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 60 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 25, 2020 · Synced Sep 29, 2026, 4:37 AM EDT
Completed Phase 2 Interventional

Brief Voluntary Alcohol and Drug Intervention for Middle School Youth

NCT01081119
View directory record Official record
Conditions
Alcohol Drinking, Cigarette Smoking, Marijuana Smoking
Interventions
Project CHOICE
Behavioral
Lead sponsor
RAND
Other
Eligibility
11 Years to 15 Years
Enrollment
6,455 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jul 9, 2014 · Synced Sep 29, 2026, 4:37 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Ethanol and Cannabinoid Effects on Simulated Driving and Related Cognition: Sub-Study I

NCT02709954
View directory record Official record
Conditions
Cannabis, Alcohol Effect, Driving Under the Influence of Alcohol and Other Drugs
Interventions
Active inhaled delta-9-THC, Placebo, Active Oral Ethanol
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 29, 2026, 4:37 AM EDT
Completed Not applicable Interventional

Post-traumatic Stress Disorder (PTSD), Addiction, and Virtual Reality

NCT01186315
View directory record Official record
Conditions
Substance Use Disorders, Posttraumatic Stress Disorder
Interventions
Prolonged Exposure Therapy, Prolonged Exposure therapy + VR/ER
Behavioral
Lead sponsor
Duke University
Other
Eligibility
18 Years to 65 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 20, 2014 · Synced Sep 29, 2026, 4:37 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Ethanol and Cannabinoid Effects on Simulated Driving and Related Cognition: Sub-Study II

NCT02710097
View directory record Official record
Conditions
Cannabis, Alcohol Effect, Driving Under the Influence of Alcohol and Other Drugs
Interventions
Active inhaled cannabis, Placebo, Active Oral Ethanol
Drug
Lead sponsor
Yale University
Other
Eligibility
21 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2026
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 29, 2026, 4:37 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Vaping THC From Electronic Cigarettes

NCT02955329
View directory record Official record
Conditions
Marijuana Dependence
Interventions
Nicotine, Cannabis, PAX Loose Leaf Vaporizer
Drug · Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 70 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 28, 2023 · Synced Sep 29, 2026, 4:37 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Vaporized Cannabis for Chronic Pain Associated With Sickle Cell Disease

NCT01771731
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Cannabis
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Aug 17, 2020 · Synced Sep 29, 2026, 4:37 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Carcinogen and Toxicant Exposure Among Young Adults Who Co-Use Cigarettes, E-cigarettes and Cannabis (Co-Tox Study)

NCT07167225
View directory record Official record
Conditions
Cigarette Smoking-Related Carcinoma, E-Cig Use
Interventions
Effectiveness of different recruitment approaches, Choice of study completion locations, Cannabis Engagement Assessment, E-cigarette dependence Scale, Nicotine dependence Scale, Co use practices QUestionnaire
Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years to 25 Years
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Sep 29, 2026, 4:37 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 8, 2026 · Synced Sep 29, 2026, 4:37 AM EDT
Suspended Phase 2 Interventional Accepts healthy volunteers

Impact of Repeatedly-Administered THC-cannabis on Experimental Pain and Abuse Liability in Humans

NCT04596644
View directory record Official record
Conditions
Cannabis, Pain, Tolerance, Hyperalgesia
Interventions
Active Cannabis, Placebo Cannabis
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 60 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Sep 29, 2026, 4:37 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

The Effects of Cannabidiol and ∆-9-THC in Humans

NCT01180374
View directory record Official record
Conditions
Healthy
Interventions
Cannabidiol, Delta-9-THC, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 30, 2022 · Synced Sep 29, 2026, 4:37 AM EDT
Completed Not applicable Interventional

C-FLASH (Cigarillo Flavor and Abuse Liability, Attention, and Substitution in youtH)

NCT04358705
View directory record Official record
Conditions
Smoking Behaviors
Interventions
Aim 1: Online survey, Eye Tracking Activity, Eye tracking survey, Online Experimental Marketplace (ETM), Aim 3 survey, Cognitive Interviews, Supplemental Aim 1 Interviews
Other · Behavioral
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
16 Years to 28 Years
Enrollment
658 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 5, 2024 · Synced Sep 29, 2026, 4:37 AM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Prenatal Exposure Effects Psychophysiology Study

NCT01134770
View directory record Official record
Conditions
Pregnancy
Interventions
Not listed
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2027
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 3, 2026 · Synced Sep 29, 2026, 4:37 AM EDT
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 29, 2026, 4:37 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 Sep 29, 2026, 4:37 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Pharmacogenetics of Cannabinoid Response

NCT00678730
View directory record Official record
Conditions
COMT Gene Polymorphism
Interventions
delta 9 tetrahydrocannabinol
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 55 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2014
U.S. locations
1
States / cities
West Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Mar 8, 2022 · Synced Sep 29, 2026, 4:37 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 29, 2026, 4:37 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Effect of Cannabis on Cigarette Use Behavior

NCT06609083
View directory record Official record
Conditions
Cannabis Use, Tobacco Use, Cigarette Smoking
Interventions
THC 30mg, THC 5mg, THC 0mg, Cigarette Full Nicotine, Cigarette Reduced 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 Jan 15, 2026 · Synced Sep 29, 2026, 4:37 AM EDT
Completed No phase listed Observational

Effects of Using E-Cigarettes on Lungs in People With HIV (HBS Ancillary)

NCT04794543
View directory record Official record
Conditions
Hiv, Lung Injury
Interventions
Not listed
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
2
States / cities
Baton Rouge, Louisiana • New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Aug 25, 2024 · Synced Sep 29, 2026, 4:37 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Imaging Sex Differences in Smoking-Induced Pulmonary Inflammation

NCT03721822
View directory record Official record
Conditions
Smoking, Cigarette, Smoking E-cigarette, Healthy Volunteer
Interventions
[18F]NOS
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 45 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Sep 29, 2026, 4:37 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Chronic Cannabis Smoking, Oxidative Stress and the Pulmonary Innate Immune Response

NCT02480283
View directory record Official record
Conditions
Cannabis Smoking, Oxidative Stress
Interventions
Bronchoscopy, Chest X-ray, Venipuncture, Intravenous Catheter
Procedure · Radiation
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 55 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2027
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 9, 2024 · Synced Sep 29, 2026, 4:37 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Patient Doctor Lies

NCT04803448
View directory record Official record
Conditions
Patient Lying, Privacy Statements, Risk Statements, Benefit Statements, Patient Lie Detection
Interventions
Benefit statement, Risk Statement, Privacy Statement, Benefit + Privacy, Risk + Privacy
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 80 Years
Enrollment
619 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Provo, Utah
Source: ClinicalTrials.gov public record
Updated Mar 16, 2021 · Synced Sep 29, 2026, 4:37 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Cannabis Effects on Brain Morphology in Aging

NCT01874886
View directory record Official record
Conditions
Study Focuses on Brain Morphology and Cognition in Older Subjects
Interventions
Not listed
Lead sponsor
University of California, Los Angeles
Other
Eligibility
60 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Nov 2, 2020 · Synced Sep 29, 2026, 4:37 AM EDT
Terminated Phase 1 Interventional

Tolerability of Cannabis in Patients Receiving Concurrent Chemoradiation for Glioblastoma

NCT03246113
View directory record Official record
Conditions
Glioblastoma
Interventions
Cannabis, Temozolomide, Radiation Therapy
Drug · Radiation
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 70 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
2
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 12, 2019 · Synced Sep 29, 2026, 4:37 AM EDT