Yellow Xanax Bar  Yellow Xanax Bar is an oral medication that belongs to the class of drugs called Triazolobenzodiazepine of medium propensity. It is a fast-acting formulation that helps subside panic and anxiety attacks. Yellow Xanax bars are also known as "school bus'' as they resemble the bus's shape, consisting of a high concentration of Alprazolam. Yellow xanax bar contains 2mg of...