Xanax (alprazolam) is a benzodiazepine commonly prescribed to manage anxiety disorders and panic disorder. It works by enhancing the calming activity of gamma-aminobutyric acid (GABA), a neurotransmitter that helps reduce excessive brain activity. This action produces relaxation, reduces tension, and decreases the physical symptoms associated with anxiety. Xanax typically begins working within 15 to 30 minutes, which is why it is often used for episodes of acute anxiety.