This product is use for making xanax bars.anax bars belongs to a group of drugs called benzodiazepines (ben-zoe-dye-AZE-eh-peens). It works by slowing down the movement of chemicals in the brain that may become unbalanced. This results in a reduction in nervous tension (anxiety). Xanax is used to treat anxiety disorders, panic disorders, and anxiety caused by depression. The drug has a currently accepted medical use in treatment in the United States.