Xanax works for the treatment of insomnia and panic disorders. Most people Buy Xanax Bars Online to relax muscle twitches and cramps from stress-related conditions. It acts by enhancing the amount of GABA present in your brain to promote calmness and relaxed feeling, which helps people who suffer from anxiety disorders. They can remain calm in a particularly stressful situation, help panic attacks and calm their body's overactivity. Xanax slows down the movement of the brain chemicals that may have become unbalanced, reducing nervous tension and anxiety; therefore, Xanax works by boosting the effects of a natural chemical called gamma-aminobutyric acid, which is made in the brain.