Clinical trials: Marijuana Use
Cannabis Use
Cannabis and Aging
With increased availability and use of cannabis by older adults aged ≥ 50 years, a rigorous evaluation of the benefits and risks of cannabis use in these individuals is necessary.
- Trial name
- NCT05084105
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Thorsten Rudroff
Cannabis Use
Using Implementation Intentions to Reduce Cannabis Use
The study will recruit frequent users of cannabis (defined at least fortnightly use) and randomize them either to: (1) form implementation intentions by linking situations in which they are tempted to use cannabis with strategies…
- Trial name
- NCT03845842
- Testing
- Volitional help sheet
- Where
- United Kingdom
- Volunteers
- 311 people, healthy volunteers welcome
- Sponsor
- University of Manchester
Cannabis, Cannabis Intoxication
Do Adolescents and Adults Differ in Their Acute Response to Cannabis?
The acute effects of cannabis may differ between adolescents and adults. Furthermore, these effects may be tempered by the presence of cannabidiol.
- Conditions
- Cannabis, Cannabis Intoxication, Cannabis Use, Cannabis Dependence
- Trial name
- CannTeenA (NCT04851392)
- Testing
- Cannabis with delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD), Cannabis with THC without CBD
- Where
- United Kingdom
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- University College, London
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
Drug Use
Gender-Responsive Drug Use Treatment for Juvenile Justice Girls
Girls in the juvenile justice system have unique developmental pathways to drug use and co-occurring risk (e.g., HIV/STI) behaviors that have typically not been considered or tested in order to identify evidence-based…
- Trial name
- NCT02293057
- Testing
- VOICES Group, Girl Health Group
- Where
- United States
- Volunteers
- 132 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Cannabis Use Disorder, Cannabis Dependence
N-acetylcysteine for the Treatment of Cannabis Dependence: Working Mechanisms
This study investigates the effects of repeated NAC administration on glutamate concentrations in the anterior cingulate cortex (ACC), on neurocognitive functioning, and on neuro-inflammatory parameters in adult…
- Trial name
- NCT03221231
- Testing
- N-acetylcysteine, Magnetic Resonance Imaging, Neurocognitive measures
- Where
- Belgium
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Universitair Ziekenhuis Brussel
Knowledge
Good Shepherd: Back to Reality Series
The purpose of this pilot study is to explore whether the Back to Reality series of video games - Harry's Journey, Harry's Journal, and Pathways to care map - increase knowledge of the emotional, social, and psychiatric sequelae…
- Trial name
- NCT02710019
- Testing
- Back to Reality Series Video Games, Control Video Game
- Where
- Canada
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- McMaster University
Cannabis Use
Effects of Cannabis Administration Routes on Human Performance and Pharmacokinetics
Background: Marijuana (cannabis) is an illegal drug. Researchers want to study people s reactions, attention, and behavior after they take marijuana in different ways.
- Trial name
- NCT02177513
- Testing
- 6.9% cannabis oral
- Where
- United States
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- National Institute on Drug Abuse (NIDA)
Tobacco Use
A Laboratory Model of Increasing Delta-9-tetrahydrocannabinol (THC) Potency on Cigarette Smoking
The objective of the proposed research is to investigate how smoking increasing potency of THC (i.e., the psychoactive ingredient in marijuana) changes tobacco cigarette smoking behavior, urges, subjective effects, and abuse…
- Trial name
- MJCIG (NCT02961309)
- Testing
- THC
- Where
- United States
- Volunteers
- 9 people, healthy volunteers welcome
- Sponsor
- Battelle Memorial Institute
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
Substance Use Disorders, Adolescent Behavior
Addiction in Adolescence - Pathomechanisms and Treatment Evaluation
This study aims to investigate the sociodemographic background as well as psychiatric comorbidities of adolescent substance users with substance use disorders.
- Trial name
- MATRIX-A (NCT03444974)
- Testing
- adapted treatment according to the MATRIX-A therapy
- Where
- Germany
- Volunteers
- 450 people, healthy volunteers welcome
- Sponsor
- Technische Universität Dresden
Marijuana Use Disorder
Effects of Smoked Marijuana on Risk Taking and Decision Making Tasks
The purpose of this study is to investigate the effects of smoked marijuana on both risk taking and decision making tasks.
- Trial name
- NCT00373399
- Testing
- Inactive Marijuana (0% THC), Low THC marijuana (1.8 %THC), High THC marijuana (3.9% THC)
- Where
- United States
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- New York State Psychiatric Institute
Marijuana Smoking
Effects of Low-dose Naltrexone in Combination With a Range of Smoked Marijuana
In heavy marijuana smokers, opioid receptor blockade increases the subjective and cardiovascular effects of marijuana. The current study was designed to clarify opioid-cannabinoid interactions by assessing how naltrexone shifts…
- Trial name
- NCT00743145
- Testing
- Inactive Marijuana (0% THC), Active Marijuana (5.5% THC), Active Marijuana (6.2% THC)
- Where
- United States
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- New York State Psychiatric Institute
Cannabis Use
Assessment of Cannabis Craving in Schizophrenia Using Virtual Reality
Background: Individuals with schizophrenia or schizoaffective disorders have a high prevalence of cannabis use. Understanding some of the environmental factors that maintain cannabis use, such as socially triggered cravings, is a…
- Trial name
- NCT01212081
- Where
- United States
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- National Institute on Drug Abuse (NIDA)
Marijuana Use
Effects of a Range of Naltrexone Doses in Combination With Smoked Marijuana
The purpose of this study is to determine if the subjective effects of marijuana will be decreased by low-doses (< 25 mg) of naltrexone and increased by high-doses (> 50 mg) of naltrexone.
- Trial name
- NCT00403117
- Testing
- Naltrexone 12 Mg+ Active Marijuana (3.27% THC), Naltrexone 25 Mg + Active Marijuana (3.27% THC), Naltrexone 50 Mg+ Active Marijuana (3.27% THC)
- Volunteers
- 49 people, healthy volunteers welcome
- Sponsor
- New York State Psychiatric Institute
Alcohol Use, Marijuana Use
Emerging Adults Who Use Alcohol and Marijuana
The purpose of this study is to if a brief motivational intervention, compared to health education sessions, reduces alcohol and marijuana use and is related to fewer sexually transmitted infections (STI)in emerging adults who…
- Conditions
- Alcohol Use, Marijuana Use, Sexually Transmitted Infections
- Trial name
- HEAT (NCT01473719)
- Testing
- motivational intervention, health education
- Where
- United States
- Volunteers
- 566 people, healthy volunteers welcome
- Sponsor
- Butler Hospital
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
Marijuana Abuse
The Effect of Prescription Medications in Marijuana Users
A subset of heavy marijuana users have trouble quitting marijuana use and the number of those seeking treatment for problems related to marijuana is increasing.
- Trial name
- NCT00893074
- Testing
- Dronabinol 30mg/day, Dronabinol 60mg/day, Dronabinol 120mg/day
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins University
Cannabis Use
Survey on the Place of Community Pharmacists in the Detection of Cannabis Use: a Student's Point of View
The objective of this survey will be to evaluate the perception by the students (except for medical students, pharmacies) of community pharmacists concerning the management of cannabis consumption.
- Trial name
- CANNACY (NCT03167021)
- Testing
- Survey
- Where
- France
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- University Hospital, Clermont-Ferrand
Recreational Cannabis Use
Emotional Brain Processes in Recreational Cannabis Users
This fMRI study investigates neural correlates of emotion regulation, emotion processing and craving in recreational cannabis users.
- Trial name
- NCT02801214
- Testing
- fMRI
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Electronic Science and Technology of China