Xanax (alprazolam) 1 mg is a benzodiazepine used to treat anxiety disorders, panic attacks, and stress-related conditions. It enhances the calming effect of GABA neurotransmitters in the brain, reducing nervousness and sudden fear episodes. While effective for short-term relief, Xanax must be taken exactly as prescribed, as misuse or long-term dependence can cause withdrawal or tolerance.