Clinical trials: Marijuana Usage
Cannabis Use, Neurocognitive Dysfunction
Prospective Evaluation on Cognitive Function and Its Associated Genetic Vulnerability in Cannabis Users
Most of the studies assessing Cannabis Use Disorder (CUD) and neurocognitive functions are cross-sectional without examining the longitudinal changes in neurocognitive function at a within-subject level with respect to the…
- Conditions
- Cannabis Use, Neurocognitive Dysfunction, Genetic Predisposition
- Trial name
- SToP-C_PeCoG (NCT04373525)
- Testing
- Genome analysis
- Where
- Hong Kong
- Volunteers
- 110 people, healthy volunteers welcome
- Sponsor
- The University of Hong Kong
Cannabis Use
Impulsivity and Time Perception
Cannabis smokers having begun prematurely their consumption (before 16 years) present a persistent impulsivity much later after have stopped their consumptions.
- Trial name
- NCT03162640
- Where
- France
- Volunteers
- 38 people, healthy volunteers welcome
- Sponsor
- University Hospital, Strasbourg, France
Schizophrenia, Substance Abuse
Screening Protocol for Research Participants
The Screening Protocol is a system devised to evaluate potential research participants for National Institute on Drug Abuse/Maryland Psychiatric Research Center (NIDA/MPRC) studies.
- Conditions
- Schizophrenia, Substance Abuse, Cocaine Abuse, Tobacco Use Disorder
- Trial name
- ScreenProt (NCT01010620)
- Testing
- Various Screening psychiatric and medical assessments
- Where
- United States
- Volunteers
- 523 people, healthy volunteers welcome
- Sponsor
- University of Maryland, Baltimore
Marijuana Abuse
Responses to Marijuana-Related Cues Versus Neutral Cues in Adults Taking Tetrahydrocannabinol (THC) - 2
The majority of past research on marijuana treatment has targeted the alleviation of withdrawal symptoms. Minimal focus has been placed on how altering craving effects may play a role in treating marijuana addiction.
- Trial name
- NCT00218504
- Testing
- Tetrahydrocannabinol
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Wayne State University
Cannabis Use, Cannabis
Joint Effort 2.0: a Mobile Application With University Students
The purpose of this study is to evaluate quantitatively and qualitatively a mobile application, Joint Effort, targeting safe cannabis use among consumers.
- Conditions
- Cannabis Use, Cannabis, Cannabis Dependence, Cannabis Smoking
- Trial name
- JOINTEFFORT (NCT05620433)
- Testing
- Joint Effort, Brief normative feedback and standard information
- Where
- Canada
- Volunteers
- 354 people, healthy volunteers welcome
- Sponsor
- Centre hospitalier de l'Université de Montréal (CHUM)
Pain Syndrome, Opioid Use
Cannabis for Opioid Substitution Trial
The purpose of this study is to define common strains of cannabis that adult chronic cancer and non-cancer pain syndrome patients are using as a replacement for opioids (narcotics).
- Conditions
- Pain Syndrome, Opioid Use, Cannabis Use
- Trial name
- COST (NCT03859089)
- Testing
- Medical Cannabis
- Where
- Canada
- Volunteers
- 1,200 people, healthy volunteers welcome
- Sponsor
- Cannabis Research Associates
Cannabis Use Disorder, Mild, Cannabis Use Disorder, Moderate
Pilot Test of Parent-Focused Cannabis-Related Actions and Practices Intervention for Adolescent Marijuana Abuse
The randomized clinical trial involves the pilot-testing of a theory-guided, empirically based, and low-cost intervention designed for legal medical marijuana-using parents to enhance parenting behaviors that limit youth exposure…
- Trial name
- CAP (NCT04923230)
- Testing
- Cannabis Actions and Practices Resource for Parents
- Where
- United States
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Oregon Research Institute
Cannabis Use
Investigating Cannabis Use Parameters on Anesthesia and Inflammation in Lumbar Spinal Surgeries
Cannabis is the most commonly used illicit drug in the United States with reported rates of use increasing from approximately 50 million in 2020 to 61.8 million in 2023 among individuals aged 12 or older.
- Trial name
- NCT07354412
- Where
- 2 sites in United States
- Volunteers
- 210 people, healthy volunteers welcome
- Sponsor
- University of Missouri-Columbia
Opioid-use Disorder, Acceptability of Health Care
Patients' Attitudes Toward and Experiences With Buprenorphine Treatment
This study will disseminate five surveys collecting individual's attitudes and experiences during buprenorphine treatment for Opioid Use Disorder during the COVID-19 pandemic.
- Conditions
- Opioid-use Disorder, Acceptability of Health Care, Opioid-Related Disorders
- Trial name
- NCT05121428
- Where
- United States
- Volunteers
- 817 people, healthy volunteers welcome
- Sponsor
- Cambridge Health Alliance
Pregnancy Related, Substance Use
The Impact of Opioid and Cannabis Exposure on Fetal Growth
Individually, both opioid and cannabis exposure during pregnancy are associated with changes in fetal growth. The extent to which opioid and cannabis exposure affect fetal growth is unknown.
- Conditions
- Pregnancy Related, Substance Use, Fetal Growth Retardation, Placenta Diseases
- Trial name
- IMPACT (NCT05899101)
- Where
- 5 sites in Canada
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Dr. Laura Gaudet
Cannabis Use
Aging and Marijuana: Benefits, Effects, and Risks
Investigators will gather data on both the beneficial and harmful effects of edible cannabis of varying composition (THC-only vs. CBD-only vs.
- Trial name
- AMBER (NCT05188404)
- Testing
- Choice of cannabis product
- Where
- United States
- Volunteers
- 326 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Boulder
Cannabis Use, Depression
Neural and Psychiatric Consequences of Cannabis Use in Adolescents
The goal of this study is to investigate the effects of cannabis on brain function among adolescents with depression.
- Trial name
- Cann-Teen (NCT06941298)
- Testing
- Neuroimaging Investigation
- Where
- 2 sites in United States
- Volunteers
- 280 people, healthy volunteers welcome
- Sponsor
- University of Miami
Cannabis Dependence
Interactions Between Physical Activity and Cannabis Use in Adults
In this study the investigators will explore the relationship between physical activity and cannabis use. The investigators will compare regional brain activation detected by imaging technique(fRMI) before and after exercise in…
- Trial name
- NCT00838448
- Testing
- Exercise
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University
Cannabis Use, Adolescent Behavior
Pilot Trial of Contingency Management for Long-Term Cannabis Abstinence
This study is a critically important first-of-its-kind investigation of the potential research utility of using contingency management to examine long-term changes in cannabis use with six months of abstinence.
- Trial name
- NCT03786224
- Testing
- Contingency Management
- Where
- United States
- Volunteers
- 6 people, healthy volunteers welcome
- Sponsor
- Massachusetts General 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, 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
Adolescent Drinking, Cannabis Use
Effectiveness of Brief Intervention in Primary Care for Diverse Young People (Chat)
Brief motivational interviewing intervention to address alcohol use among diverse teens 12-17.
- Trial name
- NCT06699251
- Testing
- Chat, Enhanced Usual Care
- Where
- 3 sites in United States
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- RAND
Cannabis Use
Electrophysiological Study of the Functioning of Magnocellular Visual Pathway in Regular Cannabis Users
This study will evaluate the impact of regular use of cannabis on the spatial sensitivity of magnocellular system (visual event-related potential, visual ERP).
- Trial name
- CAUSA MAP (NCT02864680)
- Testing
- Electroretinography, Contrast sensitivity test during Electroencephalography, Visual simultaneity test during Electroencephalography
- Where
- France
- Volunteers
- 163 people, healthy volunteers welcome
- Sponsor
- Central Hospital, Nancy, France
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
Healthy
The Effects of ∆-9-THC and Naloxone in Humans
The purpose of this project is to examine the effects of mu-opiate antagonism on the rewarding and reinforcing effects of delta-9-tetrahydrocannabinol (THC), the main psychoactive ingredient of cannabis.
- Trial name
- NCT01591629
- Testing
- Naloxone, Delta-9-THC
- Where
- United States
- Volunteers
- 6 people, healthy volunteers welcome
- Sponsor
- Yale University