Alprazolam 0.25mg is a prescription medication belonging to the benzodiazepine class. Commonly known by its brand name Xanax, it is primarily used to treat anxiety disorders and panic disorder, as well as for the short-term relief of symptoms of anxiety. Alprazolam works by enhancing the effects of a neurotransmitter called gamma-aminobutyric acid (GABA) in the brain, which leads to a calming effect on the central nervous system.