Active clinical trials for "Marijuana Abuse"

The purpose of this study is to determine if dronabinol decreases the symptoms of marijuana addiction and withdrawal.

The Three Aims of this study are (only studies for Aim 1 were completed) Measure the impact of citicoline on marihuana use patterns in subjects' individualized natural settings and responses to marihuana challenge using functional brain MRI scans. Hypothesis - 2 g/day citicoline will produce greater reductions in marihuana use and craving in heavy marihuana users than placebo citicoline over a 8-week treatment period as measured in their natural environments. The same participants will experience greater improved brain activation patterns and an improvement in cognitive functioning compared to placebo controlled subjects. Measure the effects of citicoline on marihuana absorption and metabolism and determine if these changes parallel changes in subjective and physiological responses in a laboratory setting. Hypothesis - Chronic (8 weeks) treatment with 2 g/day citicoline will produce increases in subjective and physiological effects of both acute marihuana smoking and placebo marihuana smoking compared to chronic placebo citicoline. Citicoline will have no effect on marihuana pharmacokinetics. Measure the effects of citicoline on marijuana-induced cue-induced craving and brain electrical activity (EEG). Hypothesis - Chronic (8 weeks) treatment with 2 g/day citicoline will reduce objective measures of marijuana cue-reactivity, and subjective reports of craving in response to marihuana cues will also be attenuated compared to chronic placebo citicoline treatment.

A definable and significant withdrawal syndrome occurs upon cessation of chronic, heavy marijuana use. Bupropion (Zyban) is a medication currently used to treat withdrawal symptoms associated with tobacco use. The purpose of this study is to determine if bupropion will help individuals stop using marijuana.

Adolescents who are diagnosed with major depressive disorder are often also diagnosed with marijuana dependence. Fluoxetine is an antidepressant medication currently used to treat young people who are diagnosed with major depressive disorder. The purpose of this study is to determine the effectiveness of fluoxetine in treating adolescents and young adults diagnosed with both major depressive disorder and marijuana dependence.

The purpose of this study is to determine if Venlafaxine Extended Release (Ven-XR) is effective in treating individuals with marijuana addiction and depression.

This study was an internal program effectiveness evaluation of the effects of a four-session weekly individualized cognitive therapy program (called the "Mind Freedom Plan" (MFP)) on substance use outcomes and substance abuse treatment retention in Veterans admitted to an intensive outpatient treatment program for substance abuse at the Richmond Veterans Administration Medical Center (RICVAMC). Substance use and treatment retention metrics of MFP-assigned Veterans were compared with those of Veterans assigned to typical case-management-oriented weekly individual sessions.

The objective of this study is to assess the changes in symptoms and cognition that occur after a 28-day abstinence period in patients with comorbid Cannabis Use Disorder (CUD) and Major Depression (MDD). This study employs a 28-day abstinence paradigm a total of 8 visits to the CAMH Russell site (screening, training, baseline, week 1, week 2, week 3, week 4, follow-up). Participants should be between the ages of 18-55, meet criteria for moderate depression and CUD, be non-treatment seeking, and be on a stable dose of antidepressant medication. The study visits will take up a total of approximately 22.5 hours with compensation for time provided. These visits will involve multiple clinical, substance use, and cognitive assessments. Abstinence will be maintained by weekly behavioural coaching sessions and contingency reinforcement.

This is a preliminary study designed to assess the safety and properties of a new oral formulation containing the two most common cannabinoids used for medicinal purposes - Tetrahydrocannabinol (THC) and Cannabidiol (CBD). The formulation is designed to disintegrate sublingually in order to enhance absorption of these ingredients by circumventing first-pass metabolism by the liver (and probably also by the intestinal mucosal cells) as well as gastric acid degradation, thus allowing a rapid onset and more intensive pharmacological effect.

The purpose of this pilot research study is to test whether certain components of the marijuana plant, known as "cannabinoids", may help to reduce symptoms in patients with OCD. Specifically, patients enrolled in the study will smoke marijuana containing different concentrations of 2 different cannabinoids, THC and CBD. Both of these agents act on the brain's "endocannabinoid system," which has been hypothesized to play a role in OCD. Neither compound is currently FDA-approved for treating OCD.

Sex and gender differences in behavioral, biological, and clinical correlates of substance use disorders are myriad, yet there exists a dearth of gender-informed treatment options. Ovarian hormones have been identified as potential mechanisms of these disparities , and recent clinical trials have begun to examine their utility as possible pharmacotherapeutic agents. The ovarian hormone progesterone has shown promise as a treatment for female cocaine and nicotine users, but has not yet been tested for cannabis. Gender differences in cannabis withdrawal, which is associated with relapse, are pronounced and several studies report more severe and impairing withdrawal symptoms in women compared to men. Developing pharmacological interventions for cannabis withdrawal remains an important priority given the significant cognitive, psychiatric, and physical consequences of heavy cannabis use.