Active clinical trials for "Marijuana Abuse"

This small pilot trial will recruit 10 cannabis use disordered participants and apply 20 sessions of rTMS in conjunction with a two session Brief Marijuana Dependance Counseling treatment paradigm. The investigators are primarily seeking to determine if the proposed paradigm is feasible and well tolerated.

Marijuana is one of the most widely used substances. This study will characterize the persistence of cannabis' (CNB's) acute effects on cognitive test performance and simulated driving over a several hour time period. The data obtained from simulated driving, cognitive tests, and biological assays of THC will be used in analyses aimed at identifying what tests or combination of tests predict both recent use and driving impairment risk. Eligible participants will undergo a full day screening visit, if still eligible they will come to Hartford Hospital in Hartford, Connecticut to take part in the full study. Participation requires overnight stays between each of the five study visits. On each of the study days participants are dosed with either a low dose of THC marijuana, a high dose of THC marijuana or placebo marijuana, (the low and high doses are repeated once each, order in which the study drug is given is double blind and chosen at random.)

This study will use a randomized controlled design to test whether 30 days of cannabis abstinence, compared to 30 days of monitoring, is associated with improvements in cognitive functioning. Non-using controls will also be enrolled to determine the clinical significance of any cognitive improvements with abstinence.

In this study, the investigators are interested in testing how lorcaserin influences the effects of cannabis in a human laboratory model of cannabis use.

Marijuana is one of the most widely used substances. However, marijuana intoxication is not fully understood in relation to driving. This study will help the investigators learn more about the potential impairments related to marijuana intoxicated driving. A combination of MRI and neuropsychological tests (which are computer and paper/pencil tasks) will be used to measure intoxication and impairment. This study will also assess levels of marijuana in blood and saliva samples. This study takes place in Hartford, Connecticut.

The study aims to evaluate the effect of fluconazole on the pharmacokinetic (PK) profile of a single oromucosal dose of Sativex® (i.e. how the body absorbs, distributes, metabolises and excretes the drug) in healthy subjects with a history of cannabis use. The primary clinical hypothesis is that no drug-drug interaction between Sativex® and fluconazole will be detected as effects on PK parameters of Sativex®, when both are administered to healthy human volunteers who have experience using cannabis. The study additionally aims to evaluate the safety and tolerability of an oromucosal dose of Sativex® in subjects when given concurrently with fluconazole.

Assess the effect of cigarette smoking of tobacco with or without addition of resin cannabis on driving performance in healthy volunteers in simulated driving in Marseille and Toulouse, and in real world driving to Bordeaux. Multicenter Study of phase 1, randomized, double-blind, cross plan, carried out in healthy male volunteers.

The purpose of this study is to expand understanding of the effects of cannabis on driving performance with and without the presence of low levels of alcohol. This project will involve the development a of a protocol and driving environment that is sensitive to the effects of cannabis on driving performance by building on prior driving situations used previously for testing the effects of alcohol on driving.

Background: - Marijuana (cannabis) is an illegal drug. Researchers want to study people s reactions, attention, and behavior after they take marijuana in different ways. They want to learn better ways to detect drugs in a person s body They also want to know how long marijuana can be found in blood, urine, saliva, and breath. Objectives: - To learn how people respond to delta-9-tetrahydrocannabinol (THC, a marijuana component) and how their bodies handle it after it is given in different ways. Eligibility: - Adults age 18 50 who use marijuana. Design: Participants are screened under another NIDA protocol. This study involves up to 6 visits to NIDA. At the first visit, participants will practice the tasks and tests they will do at their dosing sessions. They will learn how to give breath and saliva samples. Dosing sessions 1 4 will last 3 5 days each. All participants will be admitted to a research clinic the night before these sessions. Some participants can stay at the clinic and some must go home between sessions. At each session, participants will eat a brownie with placebo or marijuana. Then they will smoke a placebo or marijuana cigarette. Some will inhale placebo or marijuana after it is vaporized. Throughout the sessions: Participants will give urine, saliva, and breath samples. Their blood will be taken with a tube in a vein and finger pricks. Their vital signs will be checked. Participants will answer questionnaires and take thinking tests. They will also take tests that assess eye movement, balance, and time estimation. Participants may have a 5th dosing session. They will eat a marijuana brownie and have the above tests and samples.

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 the dose-response function for marijuana-elicited effects in heavy marijuana smokers. For this within-subject, double-blind study, a marijuana smoking procedure was designed to characterize a dose-response relationship for marijuana's subjective and cardiovascular effects under blinded conditions.