Active clinical trials for "Marijuana Abuse"

This study will be the first in vivo human multimodal neuroimaging study exploring the relationship between mGluR5 availability (PET), neural oscillations (EEG), and cognitive function in people with CUD. The goal is to test the overall hypothesis that mGluR5 availability is higher in people with CUD compared with HC. In Aim 1, the investigators will determine differences in mGluR5 availability between people with CUD and HC in the fronto-limbic brain circuit. Aim 2 examines the associations between mGluR5 availability, CUD severity, neural oscillations, and cognitive function in CUD subjects. Aim 3 will determine how prolonged abstinence from chronic cannabis use affects mGluR5 availability, neural oscillations, and cognitive function in CUD subjects.

The aim of the study is to examine the effect of cannabis use on brain synaptic density among older adults using [11C]UCB-J PET imaging.

This project seeks to learn more about the effects of cannabis use on the endocannabinoid system and endogenous opioid systems in adolescents to address a fundamental gap in knowledge and identify biomarkers that may help distinguish youth who relapse from youth who remain sober.

This study will address whether cannabis affects antiretroviral therapy (ART) drug concentrations, mood, and thinking. The project will have two phases. Phase 1 is an observational study, in which 120 people will be assessed to evaluate the effects of chronic cannabis use on ART drug concentrations, mood, and thinking. In Phase 2, the study will administer cannabis (or placebo) to 40 people to examine its acute effects on ART drug concentrations.

Tetrahydrocannabidiol (THC) is the psychoactive chemical in cannabis that makes people high. This study aims to dissect acute impairment of various forms of memory and learning by THC in cannabis compared to placebo. Impairment will be assessed via a short cognitive test battery and then subjects will complete four tasks in the fMRI scanner.

The purpose of this Phase I non-therapeutic trial is to examine the neurological effects of cannabis on stress reactivity and inhibition in healthy cannabis users. We expect differences between high ratio CBD:THC cannabis oil, low ratio CBD:THC cannabis oil, and/or placebo on outcome measures.

This study employs a repeated measures experimental design to examine the effect of THC-dominant dose of cannabis and CBD-dominant dose of cannabis, relative to placebo, on subsequent drinking in an alcohol choice task in which participants choose either to drink or receive monetary reinforcement for drinks not consumed. Cannabis will be administered simultaneously with an alcohol-priming dose or alcohol placebo. The study will enroll up to 350 nontreatment-seeking heavy episodic alcohol drinkers who use cannabis weekly.

Cannabis use is increasing and will only further escalate with legalization of recreational and medical cannabis use in western countries , with a prevalence greater than 30 % in the US and most European countries for individuals between 16 and 24 years of age. There are no available pharmacological treatments of cannabis use disorder (CUD). Thus, the development of safe and effective medications for the treatment of CUD is an urgent public health priority. The preclinical efficacy and available ADMET (Administration, Distribution, Metabolism, Elimination and Toxicology) in animal and human data suggest that AEF0117, an investigational new study drug, could constitute a very efficacious and safe treatment for cannabis abuse disorders. In the 3 early studies conducted with AEF0117, AEF0117 was administered orally after a light breakfast. AEF0117 showed a good bioavailability and favorable, dose-proportional pharmacokinetics . In this protocol, the effects of food on AEF0117 bioavailability in healthy volunteers will be investigated by comparing the rate and extent of AEF0117 when 1 mg AEF0117 is administered in fed state versus fasting state. The safety and tolerability of AE0117 has been demonstrated in the clinical studies conducted to date. This trial will provide data on the effect of food on the oral bioavailability of AEF0117 to support the next stage of the clinical development of the drug.

Marijuana is the most commonly used illicit drug. There is high demand for effective interventions for cannabis use disorder, yet few specific treatments for have been developed. This study will evaluate the efficacy of varenicline for reducing marijuana use in people who use marijuana frequently.

This is a proof-of-concept of a new Virtual Reality (VR) Avatar Intervention for Cannabis Use Disorders (CUD) in patients with psychotic disorders and/or mood disorders. The primary outcomes are reductions in cannabis use, cannabis use disorder severity, and increased quality of life.