Cocaine-Related Disorders Clinical Trial
Official title:
A Double-Blind, Placebo Controlled Trial of Propranolol and Amantadine for the Treatment of Cocaine Dependent Subjects With Severe Cocaine Withdrawal Symptoms
Cocaine addiction is a serious health problem with no available medical treatment for preventing relapse. Amantadine, a medication that improves muscle control, and propranolol, a medication that lowers blood pressure, may be useful in treating cocaine addiction in individuals with severe cocaine withdrawal symptoms. This study will evaluate the effectiveness of amantadine and propranolol in preventing drug relapse among cocaine addicts.
Cocaine withdrawal symptoms are a major contributing factor for why outpatient cocaine
dependence treatment programs often fail. Individuals with severe cocaine withdrawal
symptoms often experience anxiety, shaking, and muscle pain. Amantadine is a medication
currently used to improve muscle control, reduce shaking, and lessen stiffness. Therefore,
it may help reduce the muscle pain that some cocaine addicts experience. By enhancing
activity of the brain chemical dopamine, amantadine may also reduce other symptoms
associated with cocaine withdrawal. Propranolol is a medication currently used to treat high
blood pressure and irregular heart rhythms. It may reduce anxiety and lessen cocaine
cravings in individuals addicted to cocaine. The purpose of this study is to evaluate the
effectiveness of amantadine and propranolol, alone and in combination, for treating cocaine
addicts with severe cocaine withdrawal symptoms.
A 2-week baseline evaluation period will be followed by an 8-week treatment phase. During
the baseline evaluation, cocaine use will be measured with urine tests, three times each
week. Only participants who are experiencing severe withdrawal symptoms and who use cocaine
at least twice during the first 2 weeks will continue in the study. Eligible individuals
will then be randomly assigned to receive amantadine alone, propranolol alone, a combination
of amantadine and propranolol, or placebo. Treatments will begin at Week 3 and study visits
will occur three times each week. Cocaine levels will be monitored throughout the study with
urine tests.
;
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Factorial Assignment, Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor), Primary Purpose: Treatment
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