Cannabis sativa is a ____________

Extensive testing of the effects of amphetamines has concluded that they

A. do not really improve athletic performances. B. can improve performances by a few percentage points. C. actually make people perform more poorly. D. enhance total work output by 30 percent or more.

After many visits to physicians in order to diagnose his sleep difficulty, Herb finally arrives at a clinic where they make an accurate diagnosis. Herb is told he has narcolepsy, which cannot be cured but is treatable

Which of the following drugs is the physician likely to prescribe? a) Ambien b) modafinil c) Haldol d) librium