View clinical trials related to Marijuana Abuse.
Filter by:This study aims to evaluate the tDCS's impact on cannabis craving in patients with schizophrenia and cannabis addiction disorder.
In France, consumption levels of alcohol, tobacco and cannabis remain high despite changes in regulations aimed at limiting access to these products and repeated prevention campaigns. The various Presidential Plans for the treatment and prevention of addictions for 2007-2011 and 2018-2022 show the concern of the public authorities on the issue of multiple consumption, encouraging general practitioners to identify and research this issue. In order to better identify and evaluate high-risk cannabis use, the French Observatory for Drugs and Drug Addiction has developed a detection tool: The Cannabis Abuse Screening Test (CAST). Although recommended in France, this questionnaire has never been tested in real primary care conditions, directly with patients consulting general medicine. The main objective of this study is the validation of a scale for the identification of problematic cannabis use, CAST, with a response modality according to a Likert scale (rated from 0 to 4 : 0 "never", 1 "rarely", 2 "occasionally", 3 "quite often", 4 "very often") or a binary response modality (response by 1 "Yes" or 0 "No") in patients who have used cannabis in the past 12 months, followed in general practice and in 3 age categories (15-18 years, 18-25 years and 25-45 years). The secondary objective is to analyze the polydrug use of alcohol and tobacco, and then the relationship between them and the level of cannabis use. This validation study of diagnostic scales in real-life situations with general medicine patients allows us to focus on the human and social sciences and public health. Although it has now been established that there is a synergy between several addictive substances with respect to cancer risks, few studies have focused on the early identification of misuse or polydrug use. However, it has been shown that general practitioners (GPs) are effective and relevant players in these fields. Because of their holistic vision of the patient, GPs are in the best position to identify consumers at risk of complications without blaming, dramatizing or trivializing. It is therefore necessary to provide GPs with early detection tools to promote contact between these patients and the healthcare system.
This study will examine the pharmacokinetics and pharmacodynamics of delta-9-tetrahydrocannabinol (THC)-infused chocolates, gummies, and drinks. Healthy adults (N=40) will complete 9 drug administration sessions, including an overnight stay prior to each session. Participants will consume THC containing products in a fasted state; following drug administration, the participants will complete cognitive and psychomotor tasks, subjective assessments, have blood collected, and vital signs monitored.
Co-administration of cannabis and tobacco is a common practice, but there is little experimental evidence aimed at understanding the reasons for this prevalence. Some preliminary evidence suggests that tobacco may actually counteract the cognitive-impairing effects of cannabis, and may also increase the subjective ('liking') effects of cannabis, but results are inconclusive. Further, there are no studies into the effects of tobacco on other cannabis-related harms such as driving, or on the ability of tobacco to alter the blood levels of THC, the chemical responsible for the psychoactive properties of cannabis. The purpose of the present study will be to evaluate the effects of tobacco, cannabis or combinations of tobacco and cannabis on driving, cognition, subjective effects and blood THC. Driving will be assessed using a state-of-the-art driving simulator that allows for the safe and objective measurement of the effects of intoxicating substances on driving. Participants will be regular users of cannabis and will be invited to the lab for four counterbalanced test sessions. In these test sessions they will drive the simulator and undergo cognitive tests before and after smoking: 1) cannabis; 2) tobacco; 3) cannabis + tobacco; or 4) placebo. Outcomes will be measured at several time points after smoking the product. Participants will also give blood for determination of levels of THC, and will complete subjective effects questionnaires both before and after smoking the cigarette. This study will be one of the first experimental laboratory studies of the reasons behind co-administration of tobacco and cannabis.
Aims: To characterize the pattern of cannabis and tobacco use and withdrawal symptoms in people who start treatment for cannabis use disorders (exclusive cannabis, concurrent and/or simultaneous with various tobacco products) through an aplication game and considering the type of users. Methodology: Mixed-methods research composed of three studies. Study I: qualitative participatory action study aimed at exploring the experiences and preferences of the cannabis users on the use of apps. This information will be instrumental in the co-design of the app. Study II: prospective longitudinal study aimed to establish consumption patterns and transitions between substances and to validate the scale of cannabis withdrawal symptoms in the Spanish population. Sample size: expected RR=1.20, α =0.05, β= 0.20, losses= 20% (n=282). Study III: qualitative study to explore participants' experiences during the process of quitting cannabis and / or tobacco. Expected results: Characterization and prediction of variables that influence cannabis and tobacco cessation/ reduction and describe withdrawal symptoms according to consumption patterns with aim of improving the design of future interventions.
The purposes of this study are 1) to determine if the administration of different low doses of CBD (5 mg, 20 mg, 50 mg and 100 mg) result in detectable subjective pleasant drug effect compared to placebo and 2) to qualitatively explore whether low dose CBD is associated with effects that are not detected with the available research tools.
Memory deficits are one of the most consistently observed cognitive effects of marijuana use. There is evidence that some decrements attributable to the primary psychoactive ingredient, delta-9-tetrahydrocannabinol (THC), may be attenuated by cannabidiol (CBD). This study will help us learn more about the relationship between THC and CBD consumption with memory processes. A combination of MRI and neuropsychological tests (which are computer and paper/pencil tasks) will be used to measure the neurocognitive and behavioral impacts of THC and CBD use.
A double blind randomized placebo controlled trial in 44 women with fibromyalgia and persistent symptoms in spite of use of conventional pharmacotherapy, will be performed in the city of Valparaiso. Patients will be randomized to either placebo or active principle and be followed for 3 months. Assesment of efficacy and safety will be done by measurement of changes in their Fibromyalgia Impact Questionnaire (FIQ) score, Insomnia Severity Index (ISI) score, pain Visual Analogue Scale (VAS) score, plasma cytokine levels and detection of adverse effects. The active principle will be a standardized extract of cannabis sativa containing 1 milligram of tetrahydrocannabinol (THC) and 0.45 milligrams cannabidiol (CBD) per drop.
The purpose of this study is to investigate the safety and effectiveness of 12 weeks treatment with an extended-release injectable form of naltrexone (Vivitrol) combined with a psychological intervention in 10 treatment-seeking adults with Cannabis Use Disorder. The hypotheses are that Vivitrol combined with a psychological intervention will be well tolerated, and will reduce cannabis use, improve abstinence rates, and reduce cannabis withdrawal and craving.
Repetitive transcranial magnetic stimulation (rTMS) and cortical excitability have a role in cannabis use disorder