Xanax 2 mg bar is a high-dose formulation of alprazolam, a fast-acting benzodiazepine used primarily to treat anxiety disorders, panic disorder, and short-term relief of symptoms of anxiety. It works by enhancing the effects of a natural neurotransmitter in the brain called GABA (gamma-aminobutyric acid), which promotes calmness and reduces overactivity in the central nervous system.

The 2 mg tablet is often called a “bar” due to its long, scored shape, which allows it to be split into four 0.5 mg sections for flexible dosing.