Green Xanax Bars help to treat anxiety disorder, panic attacks, and phobia. It is a benzodiazepine medicine that works in the brain to produce a calming and relaxing effect. It enhances the function and activity of a GABA (Gamma-aminobutyric acid) neurotransmitter. Low GABA levels specifically cause anxiety, stress, and epilepsy. On the other hand, a green Xanax bar Increases GABA level, boost mood, and produces a calming, relaxed feeling in the brain and body.