Each Xanax 2mg tablet contains alprazolam, a potent benzodiazepine compound that acts on the central nervous system to enhance the calming effects of gamma-aminobutyric acid (GABA), a neurotransmitter responsible for reducing neuronal excitability. This mechanism results in a profound sense of relaxation, sedation, and relief from symptoms of anxiety, including excessive worry, tension, and apprehension.