Alprazolam, commonly known under the brand name Xanax, is a fast-acting medication primarily used to manage anxiety disorders, panic disorders, and occasional bouts of intense stress. Classified as a benzodiazepine, it works by enhancing the effects of a neurotransmitter called GABA, which helps to relax the brain and body. In the United States, Alprazolam is available by prescription only and is widely used due to its efficacy in reducing symptoms of generalized anxiety, social anxiety, and panic attacks.