is xanax a stimulant
1 Xanax (alprazolam) is the single most prescribed psychiatric medication in the US. 2  Xanax is a member of the benzodiazepine family of drugs and is primarily used to treat anxiety and panic disorders.  Xanax is dispensed in 0.25 mg, 0.5 mg, 1 mg and 2 mg strengths.