Active clinical trials for "Marijuana Use"

The purpose of this study is to determine the effectiveness of two brief counseling sessions delivered to emergency department (ED) patients who report conjoint alcohol and marijuana use, in reducing injuries and other negative consequences, in comparison to an assessment only group.

The goal of this sub-study is to learn more about how an educational videogame can feasibly be implemented and disseminated in youth programs.

This study tests the feasibility of an intervention to prevent risky alcohol or marijuana use that adds a 4-week course of tailored text messaging to a brief motivational intervention for 13-18-year-old adolescents.

Study participants received dronabinol (0, 120mg/day and 240mg/day) for 12 consecutive days in a randomized order. During each dronabinol maintenance period they were able to self-administer active or placebo cannabis using either a progressive ratio schedule or choice between cannabis and monetary alternative.

This study is attempting to determine whether there is any effect (worsening or improvement of sexual function) after marijuana consumption. Both users and non users of marijuana will be given the opportunity to participate by completing a questionnaire.

This trial studies attitudes about legalization of marijuana use in participants with cancer. Questionnaires may help doctors to learn about and compare the attitudes that patients in non-legalized and legalized states have towards the legalization of medical marijuana.

The investigators are interested in understanding personal factors such as medical conditions and mental health, as well as social and economic factors, that influence marijuana (and other substance) use in HIV-positive patients. Several alternative hypotheses will be evaluated in the proposed project: healthier patients may self-select marijuana use; marijuana use may be associated with consequences that create barriers to seeking healthcare; marijuana use may have medicinal value that reduces the need for such care.

More scientific information is needed about medical marijuana use among HIV positive patients. There is conflicting information about the use of marijuana, use of medical marijuana, and the associations between them and health status/health risk behaviors/health care utilization. In addition, it is not clear whether patients who participate in prospective clinical studies differ from participants who do not participate; if there are differences between those two groups, then this would limit generalizability of knowledge about these issues. The goal of this project is to describe the use of marijuana among HIV positive patients and its association with health status/health risk behaviors/health care utilization.

Background: - Marijuana is the most widely used illicit drug in the world, yet relatively little is known about users who try to quit without formal treatment ( spontaneous quitting). Studies have suggested that there are some common strategies that many individuals use in spontaneous quitting, such as changing one s lifestyle or identity, reminding oneself of negative consequences, support from family and friends, and religion. However, more research is needed to determine potential treatment strategies for marijuana use. Objectives: To identify strategies used to help with marijuana quitting among non-treatment seeking adult marijuana users. To identify withdrawal symptoms experienced during marijuana quitting and their relationship to the quitting strategies used and the outcome of the quit attempt. To evaluate whether subgroups of marijuana users differ in their experience of marijuana quitting. Eligibility: - Individuals at least 18 years of age who have made at least one attempt to quit marijuana use. Design: The study will consist of one visit of approximately 1 to 2 hours. Participants will fill out three questionnaires. The questionnaires have different types of questions, and will ask about background and lifestyle, marijuana use and craving patterns and behaviors, and difficulties in previous attempts to quit using marijuana.

The overall goal of this project is to collect preliminary data on psychosocial measures and behavioral performance comparing individuals with Opioid Use Disorder, Cocaine Use Disorder, dual diagnosis of Opioid and Cocaine Use Disorder, and Healthy Controls in an effort to determine overall feasibility of a phenotypic "fingerprint" for cohorts of individuals with addictions for use during clinical trials.