C????n? provides a ??m?l?r psychomotor stimulant result to th?t ?file amphetamine and r?l?t?d ??m??und?. It increases transmitter ??n??ntr?t??n? ?n b?th th? n?r?dr?n?rg?? ?nd the d???m?n?rg?? synapse ?nd also ??t? ?? ?n ?n???th?t?? agent. Th? ???? leaves used to make the drug ?? ?l?? a ???r?