Clinical trials: Cannabis Smoking
Cannabis Use, Cannabis Smoking
Longitudinal Study of Xenon-129 MRI Imaging Effects of Cannabis Smoking
This is a longitudinal study of the long-term health impact of cannabis smoking on the lungs. Participants will be followed over a period of 3 years, and impacts of cannabis smoking on the lungs will be measured with magnetic…
- Conditions
- Cannabis Use, Cannabis Smoking, Marijuana Smoking, Marijuana Usage
- Trial name
- NCT03909477
- Testing
- Hyperpolarized Xenon-129 MRI of the lungs, Computed Tomography (CT), Pulmonary Function Tests (PFTs)
- Where
- Canada
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Western University, Canada
Cannabis, Vaping
A Virtual Reality Game to Prevent E-cigarette and Cannabis Vaping
The goal of this study is to develop and test an adapted version of our virtual reality videogame intervention prototype, Invite Only VR, developed for middle school students, which focuses on e-cigarette and marijuana vaping…
- Conditions
- Cannabis, Vaping, Emotion Regulation
- Trial name
- NCT07413432
- Testing
- Virtual reality videogame intervention for vaping prevention
- Where
- United States
- Volunteers
- 62 people, healthy volunteers welcome
- Sponsor
- Yale University
Alcohol Drinking, Marijuana Smoking
Brief Counseling to Reduce Injuries Among Emergency Department Patients Who Report Alcohol and Substance Use
The purpose of this study is to determine the effectiveness of two brief counseling sessions delivered to emergency department (ED) patients who report conjoint alcohol and marijuana use, in reducing injuries and other negative…
- Trial name
- NCT00547963
- Testing
- brief counseling
- Where
- United States
- Volunteers
- 554 people
- Sponsor
- National Institute on Alcohol Abuse and Alcoholism (NIAAA)
Mental Health Disorder, Substance Abuse Drug
Tobacco Cessation Among Smokers Under Alcohol and/or Cannabis Treatment
Aims: To identify the predictors associated with smoking cessation in smokers under treatment for alcohol and/or cannabis treated in drug treatment centers (DTC).
- Conditions
- Mental Health Disorder, Substance Abuse Drug, Alcohol Abuse, Cannabis Use
- Trial name
- ACT-ATAC (NCT04841655)
- Where
- 2 sites in Spain
- Volunteers
- 1,625 people
- Sponsor
- Institut Català d'Oncologia
Cannabis Smoking, Oxidative Stress
Chronic Cannabis Smoking, Oxidative Stress and the Pulmonary Innate Immune Response
This study plans to evaluate the effects of chronic cannabis smoking on lung health by evaluating its effects on pulmonary health, lung physiology and alveolar macrophage function.
- Trial name
- NCT02480283
- Testing
- Bronchoscopy, Chest X-ray, Venipuncture
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
Cannabis Use, Stress
Perceptual Influences From Smoking Cannabis: an Experimental Study
The purpose of the study is to better understand the effects of cannabis in relation to mental and physical states including its relationship with mood, cognition, perception including the experience of temperature and pain, and…
- Trial name
- PISCES (NCT06588582)
- Testing
- Water Temperature Variation - WW, Water Temperature Variation - CW
- Where
- United States
- Volunteers
- 166 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Boulder
Cigarette Smoking-Related Carcinoma
Understanding Tobacco and Cannabis Co-Use Practices: Initiation, Escalation, and Maintenance
This study evaluates histories among cannabis and tobacco co-users of their initiation, escalation, and maintenance of the co-use behavior.
- Trial name
- NCT07439471
- Testing
- Non-Interventional Study
- Where
- United States
- Volunteers
- 40 people
- Sponsor
- Roswell Park Cancer Institute
Marijuana Smoking
Effect of Quetiapine on Marijuana Withdrawal and Relapse
The objective of this study is to investigate the interaction between marijuana and quetiapine, with the goal of using this information to improve marijuana treatment outcome.
- Trial name
- NCT00743366
- Testing
- Marijuana, Quetiapine
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- New York State Psychiatric Institute
Smoking
Development of a Videogame Prototype Targeting Cigarette and Marijuana Smoking, and Tobacco Product Prevention Among Young Adolescents
To study feasibility and implementation of a education videogame and the effects on adolescents knowledge and beliefs around tobacco products.
- Trial name
- smokeSCREEN (NCT03107936)
- Testing
- smokeSCREEN game
- Where
- 4 sites in United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Yale University
Sexual Behavior, Alcohol Drinking
Adolescent Safer Sex Social Network Intervention
Social networks are thought to hold the potential for shaping behavior on the grounds that social and situational factors more strongly influence behavior than do personality variables.
- Conditions
- Sexual Behavior, Alcohol Drinking, Marijuana Smoking
- Trial name
- NCT00107562
- Testing
- Adolescent Safer Sex Social Network Intervention
- Where
- 2 sites in United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- University of North Carolina, Chapel Hill
Psychosis, Substance Use
Families With Substance Use and Psychosis: A Pilot Study
The purpose of this study is to develop and evaluate an intervention that adapts Community Reinforcement and Family Training (CRAFT) for families experiencing first episode psychosis and substance use delivered via telemedicine…
- Conditions
- Psychosis, Substance Use, Substance Use Disorders, Family
- Trial name
- NCT04284813
- Testing
- CRAFT-FT
- Where
- United States
- Volunteers
- 29 people, healthy volunteers welcome
- Sponsor
- Mclean Hospital
Nicotine Dependence, Tobacco Use Disorder
E-cigarette Cessation in Adults Who Co-use Cannabis
The purpose of this study is to better understand tobacco outcomes using a commonly prescribed stop smoking medication (varenicline) and financial incentives for adults who also use cannabis.
- Trial name
- VapeCAT (NCT06688539)
- Testing
- Varenicline Pill, Contingency management, Counseling
- Where
- 3 sites in United States
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- Medical University of South Carolina
Cannabis Use, THC
Cannabis THC Potency, Metabolism, and Cognitive Impairment in Young Adults
The goal of this interventional study is to determine the impact of high potency THC product use on cognitive function of young adults aged 21-25.
- Conditions
- Cannabis Use, THC, Marijuana Use, Cognitive Impairment
- Trial name
- THC-YA (NCT06077292)
- Testing
- 15% THC Potency Reduction, 35% THC Potency Reduction
- Where
- United States
- Volunteers
- 110 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
HIV Positive, Marijuana Smoking
Medical Marijuana Use in HIV+ Patients Prospective Cohort Study
The investigators are interested in understanding personal factors such as medical conditions and mental health, as well as social and economic factors, that influence marijuana (and other substance) use in HIV-positive patients.
- Trial name
- MMC-1 (NCT01536899)
- Where
- United States
- Volunteers
- 119 people
- Sponsor
- Wayne State University
Smoking
Development of a Videogame Prototype Targeting Cigarette and Marijuana Smoking, and Tobacco Product Prevention Among Young Adolescents (smokeScreen)
The goal of this sub-study is to learn more about how an educational videogame can feasibly be implemented and disseminated in youth programs.
- Trial name
- NCT03722888
- Testing
- smokeSCREEN video game
- Where
- 3 sites in United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Yale University
Tobacco Use Disorder, Cannabis Use Disorder
Varenicline for the Treatment of Cannabis and Tobacco Use Disorders in Veterans
After initial eligibility screening, Veterans who use both cannabis and tobacco will be randomly assigned to receive either varenicline (Chantix) or placebo for 12 weeks.
- Trial name
- Vet Cat (NCT05294263)
- Testing
- Varenicline
- Where
- United States
- Sponsor
- VA Office of Research and Development
Marijuana Smoking
Effects of Dronabinol (Oral THC) on Cannabis Use
Study participants received dronabinol (0, 120mg/day and 240mg/day) for 12 consecutive days in a randomized order. During each dronabinol maintenance period they were able to self-administer active or placebo cannabis using…
- Trial name
- NCT01394185
- Testing
- Dronabinol 120mg/day, Dronabinol 240mg/day
- Where
- United States
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins University
Smoking, Marijuana
Laboratory Study of Cannabidiol on the Effects of Smoked Marijuana
The objective of this study is to assess the effects of oral cannabidiol (CBD; 0, 200, 400, 800 mg) on smoked marijuana's (0, 5.6% THC) subjective, reinforcing, cognitive, and cardiovascular effects.
- Trial name
- NCT01844687
- Testing
- CBD
- Where
- 3 sites in United States
- Volunteers
- 50 people
- Sponsor
- National Institute on Drug Abuse (NIDA)
Marijuana Smoking
Behavioral Economic Analysis of Demand for Marijuana
This laboratory study will employ a multi-session experimental design to examine the behavioral economic demand for marijuana, by studying effect of marijuana administration (High THC) on demand for marijuana, and marijuana…
- Trial name
- NCT03518567
- Testing
- Smoked marijuana cigarettes: High THC dose (6% THC)
- Where
- United States
- Volunteers
- 133 people, healthy volunteers welcome
- Sponsor
- Brown University
Cannabis Intoxication
The Impact and Detection of Driving Impairments Associated With Acute Cannabis Smoking
This study was authorized by the California Legislature (Assembly Bill 266, the Medical Marijuana Regulation and Safety Act to help with detection of driving under the influence of cannabis.
- Trial name
- NCT02849587
- Testing
- Cannabis
- Where
- United States
- Volunteers
- 199 people, healthy volunteers welcome
- Sponsor
- University of California, San Diego