The purpose of this study is to evaluate use of risperidone with cocaine abusers. Study
measures incorporate an appropriate integration of behavioral and neurobiological indices.
Risperidone in low doses is compared with placebo in a 6-week randomized trial. Subjects
also receive supportive counseling. Outcome measure include rating of behavior, mood, drug
abuse, global function, and urine toxicology.
Cocaine abuse or dependence
Dependence on other drugs. Major psychiatric illness