Effects of potential agonist-replacement therapies for stimulant dependence on inhibitory control in cocaine abusers.

Two experiments were conducted to determine whether methylphenidate or modafinil, two potential pharmacotherapies for stimulant dependence, would impair inhibitory behavior in cocaine users. Eleven cocaine abusers were administered methylphenidate (0, 15, 30, and 45 mg) or modafinil (0, 150, 300, and 450 mg) across four experimental sessions. A cued go-no-go task was used to measure response execution and inhibition.