Xanax (alprazolam) is a benzodiazepine. Benzodiazepines act on the brain and central nervous system to produce a calming effect.
Xanax is used to treat anxiety disorders, panic disorders, and anxiety caused by depression. It is the single most prescribed psychiatric medication in the United States
For anxiety Disorders
4 mg maximum, given in divided doses.
4 mg daily, although some patients may need more.