Yellow Xanax Bars are 2mg Xanax Bars used to treat anxiety caused by depression. You can easily Buy Yellow Xanax Bars Online from our website. Xanax is the brand name for Alprazolam. It belongs to the family of benzodiazepines; Xanax works by enhancing the activities of several neurotransmitters of the brain and produces a calming effect in the brain and the nerves. Xanax helps treat generalized anxiety, acute anxiety, panic disorders with or without agoraphobia, and chemotherapy-induced nausea and vomiting.