Xanax is one of the most commonly prescribed drugs in the United States. It is the brand name for the anti-anxiety medication alprazolam and is classified as a benzodiazepine, or benzo. Benzos are mild tranquilizers that are intended for the short-term relief of anxiety symptoms in adults, particularly those that have panic disorders. Xanax works by suppressing the central nervous system to relieve stress rapidly. In addition to treating anxiety symptoms and panic disorders, it can also be used for sleep disorders, depression, and in some cases, seizures.