Active clinical trials for "Marijuana Abuse"

The primary purpose of this study is to investigate the effect of guanfacine-ER on reductions in cannabis use and explore its effects on impulsivity and withdrawal through a hybrid in-person and virtual trial of treatment-seeking individuals with Cannabis Use Disorder (CUD), and assessing the feasibility of the virtual components of the study.

Cannabis users who experienced a psychosis are particularly vulnerable to cannabis-related harms, which can include worse psychotic symptoms and more hospitalizations. Unfortunately, few psychosocial interventions exist that aim to decrease these harms. Instead, most focus on ceasing cannabis use which is rarely appealing to cannabis users. Furthermore, face-to-face psychotherapy often remains inaccessible to people with psychosis mostly due to lack of trained clinicians. Alternatives such as e-interventions have the potential to increase access to treatment and decrease clinicians' workload. Among cannabis harm reduction approaches are the protective behavioural strategies. These strategies do not encourage nor discourage cannabis use. Instead, they recommend behaviours for safer cannabis use. For example, these strategies include: 1) avoid driving a car under the influence of cannabis, 2) avoid mixing cannabis with other drugs and 3) purchase cannabis only from a trusted source. In the present pan-Canadian study, we will test the first e-intervention called CHAMPS (Cannabis Harm-reducing App for Managing Practices Safely) for cannabis harm reduction adapted for young adult cannabis users who experienced a psychosis. CHAMPS is a smartphone application that includes 17 strategies for safer cannabis use, a personalized consumption goal and a consumption journal. The goals of this study are 1) to confirm whether CHAMPS is acceptable to participants and 2) to test whether it works, notably by positively impacting participants' health and cannabis consumption habits.

The purpose of this study is to test a text-delivered counseling program to stop or reduce cannabis use among young adults (ages 18 to 25).

This study will be a randomized, double-blind, placebo-controlled, multicenter trial conducted to evaluate whether PP-01 mitigates the withdrawal symptoms associated with discontinuing cannabis in participants with moderate to severe Cannabis Use Disorder (CUD). The study will enroll approximately 225 participants with moderate to severe CUD and will include 5 arms, including a placebo arm, to help assess the incidence and severity of withdrawal symptoms in heavy long-term users of cannabis. Participants receive study medication for 34 days and participate in 11 visits (7 at a clinic and 4 telemedicine).

Incidence of strokes has increased these last 20 years in young population. This rise could be linked to alcohol, tobacco or drug use like cannabis. Cannabis has previously been descripted as a potential factor of reversible vasoconstriction. The main objective is to show that an exhaustive assessment of a stroke facing a young person frequently lead to a diagnostic of reversible vasoconstriction due to cannabis use. Evaluation will focus on prevalence of strokes secondary to a reversible vasoconstriction attributable to cannabis in young subjects. There's a real public healthcare interest in terms of primary and secondary prevention to evaluate the role of cannabis as a risk factor of stroke in young population.

Social media based intervention to support teens in their efforts to quit vaping.

There is an association between intracranial arterial stenosis and ischemic stroke in young adults. The aim of this study is to evaluate the prevalence of intracranial arterial stenosis in asymptomatic regular resin of cannabis users in comparison with control subjects.

The purpose of this study is to evaluate quantitatively and qualitatively a mobile application, Joint Effort, targeting safe cannabis use among consumers. This randomized controlled trial is currently conducted on the Joint Effort mobile application.

This Phase II STTR program consists of two major goals within the overarching goal of developing and validating a proprietary device (BID2) for marijuana and opioid detection in breath samples.

The goal of this clinical trial is to investigate the (cost-)effectiveness of contingency management (CM) compared with Cognitive Behavioural Therapy (CBT) for the treatment of cannabis use disorder (CUD) in youth (16-22 years). The main questions it aims to answer are: What is the efficacy of 12 weeks outpatient CM versus CBT in youths with a CUD, in terms of cannabis abstinence during the intervention period? What is the long-term efficacy of CM versus CBT at 6- and 12-months follow-up (FU)? What is the cost-effectiveness of CM versus CBT at 12-months FU from a societal perspective? Study hypotheses are: 1. CM will result in more cannabis-abstinent days than CBT during the intervention; 2. CM is more effective and cost-effective than CBT at 12 months follow-up. Eligible patients (n=154) will be randomly assigned to either 12 weeks of outpatient CM or CBT. Assessments are conducted by trained research-assistants at baseline, after 6, 12, 26 and 52 weeks, and twice-weekly during treatment and consist of questionnaires, a computer task and collection of urine samples. Primary endpoint is the number of biochemically verified cannabis abstinent days in the 12-week treatment period. Key secondary endpoint: Treatment response: 50% or more reduction in cannabis use days in the past 4 weeks, compared with baseline. The primary outcome will be modelled in the intention-to-treat population in a (negative binomial) regression analysis with treatment group as independent variable and stratification variables as covariates. Cost-effectiveness and cost-utility analysis (CEA; CUA) will be performed from a societal perspective. CEA: Treatment response is the central clinical endpoint for calculations of incremental costs per responder. CUA: Incremental costs per QALY (based on EuroQoL).