Xanax, the brand name for alprazolam, is a prescription medication belonging to the benzodiazepine class. It is commonly used to treat anxiety disorders and panic attacks. Xanax is used To manage symptoms of generalized anxiety disorder (GAD) and other anxiety-related conditions. It is also used To treat panic attacks with or without agoraphobia. Alprazolam works by enhancing the effects of gamma-aminobutyric acid (GABA), a neurotransmitter that has a calming effect on the brain and nervous system.