Combination of Dronabinol & Clonidine for Cannabis Dependence in Patients

Status Terminated

Clinical Trial Summary

Cannabis use disorders are an important public health problem in the United States, but no effective pharmacotherapies are available to treat these disorders. People with schizophrenia are more likely than healthy people to abuse cannabis. Cannabis use may worsen clinical outcomes in this group, making the identification of pharmacotherapy to treat cannabis dependence in those with schizophrenia important. The investigators intend to test the combination of dronabinol, a cannabinoid agonist, and the α2-adrenergic agonist clonidine, for cannabis dependence in subjects with schizophrenia. The combination of dronabinol and clonidine may alleviate cannabis withdrawal symptoms while allowing treatment-seeking outpatients to benefit from medical management (MM) sessions when they are trying to stop using cannabis. The investigators propose to assess the relationship of dronabinol and clonidine, when added to MM, on cannabis use patterns in cannabis-dependent patients with schizophrenia.

Hypothesis: The investigators predict that combination pharmacotherapy of dronabinol and clonidine will significantly reduce cannabis use compared to those receiving placebo.

Clinical Trial Description

Subjects will receive either the combination of dronabinol and clonidine or placebo in addition to medical management (MM) over a 10-week treatment period. Following treatment completion, subjects will have follow-up visits until 14 weeks after treatment initiation. This pilot study will evaluate the feasibility of the combination of dronabinol and clonidine for cannabis dependence and will establish effect sizes for a larger trial.

Cannabis use disorders are highly prevalent in the United States and rising among high school seniors, making the identification of efficacious treatments for cannabis dependence of critical clinical and public health significance. Schizophrenia is overrepresented among those with cannabis dependence. At the completion of this study, the investigators hope to have improved our understanding of the relationship of the pharmacotherapy combination of dronabinol and clondine on cannabis use. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT01598896
Study type	Interventional
Source	Mclean Hospital
Contact
Status	Terminated
Phase	Phase 2/Phase 3
Start date	May 2012
Completion date	August 2017

View Details

See also
Status	Clinical Trial	Phase
Completed	`NCT01005810` - A Trial of N-Acetylcysteine (an Over-the-Counter Medicine) in Adolescents Who Smoke Marijuana	Phase 2
Completed	`NCT00114439` - Lithium Cannabis Withdrawal Study	Phase 2
Completed	`NCT00350285` - The Teen Marijuana Check-Up	Phase 2
Completed	`NCT01618656` - Safety and Efficacy of a FAAH-Inhibitor to Treat Cannabis Withdrawal	Phase 2
Completed	`NCT01153490` - Improving Substance Use and Clinical Outcomes in Heavy Cannabis Users With Quetiapine	Phase 4
Completed	`NCT02946489` - Facilitating the Behavioral Treatment of Cannabis Use Disorder	Phase 1
Completed	`NCT02088177` - Study of Long-Acting Injectable Naltrexone to Treat Cannabis Dependence	Phase 1/Phase 2
Not yet recruiting	`NCT01565174` - The Pharmaco-genetic and Brain Mechanisms Associated With Cannabis- Induced Psychosis	N/A
Completed	`NCT01697709` - Quetiapine Pharmacotherapy for Cannabis Dependence	Phase 2
Recruiting	`NCT04721353` - Reducing Cannabis Overuse With Prazosin	Phase 4
Completed	`NCT01603992` - Quiting Marijuana Use: Self-report Study of Quitting Straegies and Withdrawal Symptoms
Completed	`NCT00167297` - Atomoxetine for the Treatment of Cannabis Dependence	Phase 2
Completed	`NCT01611948` - Treatment for Cannabis Withdrawal and Dependence	Phase 2
Recruiting	`NCT03221231` - N-acetylcysteine for the Treatment of Cannabis Dependence: Working Mechanisms	Phase 4
Not yet recruiting	`NCT03366909` - Mindfulness Meditation and Cannabis Dependence : Therapy Effectiveness	N/A
Completed	`NCT01639872` - Clozapine for Cannabis Use in Schizophrenia	Phase 4
Not yet recruiting	`NCT06334016` - Evaluating the Delivery and Effects of THC Vaping Liquids in the Bloodstream	Early Phase 1
Completed	`NCT01793961` - Effects of Chronic Intake of Cannabis on Contrast Sensitivity	N/A
Completed	`NCT01834794` - Targeting Tobacco Cessation During Treatment for Cannabis Use Disorders	N/A
Completed	`NCT01747850` - Sativex and Behavioral-relapse Prevention Strategy in Cannabis Dependence	Phase 2

Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Combination of Dronabinol and Clonidine for Cannabis Dependence in Patients With Schizophrenia — DCCS

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms