Xanax is a brand name for alprazolam, which belongs to a class of drugs known as benzodiazepines. Benzodiazepines are central nervous system (CNS) depressants that work by enhancing the effects of a neurotransmitter called gamma-aminobutyric acid (GABA). GABA is a neurotransmitter that helps regulate brain activity, and by increasing its effects, Xanax produces a calming and relaxing effect on the brain.

Xanax pills are typically small, oval-shaped tablets that come in various dosages, ranging from 0.25 mg to 2 mg. The tablets are scored, allowing them to be easily broken into smaller doses if necessary. The pills are often distinguishable by their color, with different dosages having different colors.