Xanax (generic name: alprazolam) is a prescription medication belonging to the benzodiazepine class, commonly used to treat anxiety disorders, panic attacks, and sometimes insomnia. It works by enhancing the effects of the neurotransmitter GABA, which helps to calm the brain and nervous system. Xanax is known for its fast-acting relief of anxiety symptoms but carries a risk of dependence, tolerance, and withdrawal when used long-term. As such, it is typically prescribed for short-term or occasional use, under close supervision by a healthcare provider.