Xanax is a brand name for the medication alprazolam, which belongs to a class of drugs called benzodiazepines. It is a prescription medication primarily used for the treatment of anxiety and panic disorders.

Xanax works by enhancing the effects of gamma-aminobutyric acid (GABA), a neurotransmitter in the brain that has a calming effect. By increasing GABA activity, Xanax helps to reduce excessive brain activity, relieve anxiety symptoms, and promote relaxation.

Xanax is available in various strengths, including immediate-release tablets and extended-release formulations. The dosage and frequency of Xanax use are determined by a healthcare professional based on the individual's condition and response to treatment. It is typically prescribed for short-term use due to the potential for dependence and addiction.

It's important to note that Xanax should only be used under the supervision of a healthcare professional and according to their instructions. Abruptly stopping Xanax or taking it in higher doses than prescribed can lead to withdrawal symptoms or other adverse effects.