Purchase Xanax Online At Overnight. Xanax, also known by its generic name alprazolam, is a medication commonly prescribed to treat anxiety and panic disorders. It belongs to a class of drugs called benzodiazepines, which work by enhancing the effects of a neurotransmitter in the brain called GABA. This helps to reduce anxiety and promote a sense of calm. Xanax is typically taken orally and is available in various forms, including immediate-release tablets, extended-release tablets, and orally disintegrating tablets. The dosage and frequency of use are determined by a healthcare provider based on the individual's condition and response to treatment.