View clinical trials related to Marijuana Abuse.
Filter by:The purpose of the study is to develop and test social media interventions to help young people increase well-being and reduce risky behaviors. The study will help researchers learn about ways to deliver wellness information in a way that is appealing and helpful to young people who use Snapchat.
Background: Tetrahydrocannabinol (THC) is a partial CB1/CB2 agonist and causes its pharmacological effects by binding to cannabinoid receptors. CB1 receptors are predominantly located in the brain (highest densities at hippocampus, cerebellum and the striatum) and at low levels in the brainstem. CB2 receptors are predominantly in the spleen and in hematopoietic cells. THC is highly lipophilic and is readily absorbed and distributed to the brain and other organs. Most of the neuropsychological studies carried out so far show that the mainly affected neurocognitive functions in cannabis users are: memory, attention, psychomotor capacity, speed of information processing and alterations of executive functions (resistance to interference, planning capacity, decision-making, verbal fluency and working memory). These effects are dose-dependent. Hypothesis: Functional CB1 receptor activation by the THC contained in the cannabis flos will induce dose-dependent effects on EEG, physiological functions and behavior: 1. EEG alterations. 2. Increase in cannabis subjective effects. 3. Increase in heart rate. 4. Increase in psychopathology scale Psychotomimetic State Inventory (PSI) score. 5. Increase in plasma cortisol concentrations. Objectives: Main pharmacodynamic objective: To assess the effects of Cannabis flos on electroencephalography (EEG) in healthy recreational cannabis users. Secondary pharmacodynamic objectives: (i) To assess the effects of Cannabis flos on: cannabis subjective effects, heart rate and psychopathology scale; (ii) To establish the pharmacokinetic/pharmacodynamic relationships between THC plasma concentrations and pharmacodynamic endpoints. Safety and tolerability objectives: To assess the safety and tolerability of THC in these subjects. Methods: Phase I, prospective, monocentric, double-blind, randomized, placebo-controlled, parallel group study to assess the THC effects on EEG neural oscillations in 16 healthy subjects with recreational cannabis use.
No actual human data for pharmacokinetics, metabolism, safety, pharmacodynamics, nor efficacy parameters are available for inhaled medical cannabis. This study was designed to investigate the innocuity and tolerability levels as well as the pharmacokinetic profile of this combination when smoked/inhaled as intended in clinical therapeutic use (i.e. patients with neuropathic pain). Consecutive dosing (over a period of 7 days) should allow to test the tolerability of chronic administration. In addition, the impact of the THC/cannabidiol pharmacological activity on the cognition activity, cognitive test will be performed before and throughout the treatment and compared to the plasma levels of THC/cannabidiol following single and multiple dosing.
The study will examine how medical cannabis use affects opioid analgesic use. This landmark study will be among the first to examine the effect of medical cannabis with different THC/CBD (Tetrahydrocannibinol/Cannabidiol) content on opioid use as well as adverse events.
Marijuana and cannabis-containing products are growing in popularity and availability in the United States, and use during pregnancy has increased dramatically. The overarching aim of this proposal is to provide pilot data for a submission which will explore the impact of chronic maternal marijuana use (primary or secondary) on fetal functioning, maternal reflective functioning and infant birth and neurodevelopmental outcomes. Chronically marijuana using pregnant women in treatment at the Center for Addiction and Pregnancy will be enrolled and asked to provide information about participants' marijuana and other licit and illicit substance use and feelings about parenting and participants' infant and undergo fetal monitoring at 36 weeks gestation. The neonates will undergo neurobehavioral examination during the first and fourth weeks of life.
This study is an open-label, single-dose, healthy volunteer phase 1 study after overnight fasting designed to study the safety and PK of medicated drops and tablet formulation for sublingual administration.
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.
Subjects will participate in a 4-visit study protocol in which they will be asked to complete a set of computerized tasks and a 45-minute simulated drive in a driving simulator. Subjects will be administered marijuana of varying pre-determined concentrations of delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD) during 3 of the visits and alcohol during one of the visits. Throughout the duration of each visit, brain activity will be measured noninvasively using an electroencephalogram (EEG) headset. The purpose of this study is to: 1. Further understand the effects of acute cannabis intoxication on driving performance in a driving simulator 2. Develop and refine brain-based biomarkers of impairment due to acute cannabis intoxication
This proposal aims to systematically examine the safety and pharmacokinetic/pharmacodynamic profile and the physiologic, neuroendocrine and behavioral stress and pain responses to acute single doses and repeated dosing of oral tablet formulation of natural Cannabidiol (CBD) alone and in combination with Tetrahydrocannabinol and matched Placebo (PLA).
The purpose of this study is to examine the effects of a seven-day combined contingency management (CM) with two sessions of brief Motivation Interviewing (MI) followed by standardized individual drug counseling on cannabis use and relapse in the following 90-day period in individuals with moderate to severe Cannabis Use Disorder (DSM-5).