Blue Xanax bar is a prescription medication used for the treatment of anxiety and panic disorders. b707 blue pill is the most useful formulation of Xanax and it was first manufactured by Breckenridge Pharmaceutical, Inc., a well-known trustworthy pharmacy. This medication is known by its characteristic blue color and rectangular shape and is imprinted with “B707” and it contains 2 mg of alprazolam. The blue Xanax pill works by reducing brain activity and producing calmness for the treatment of anxiety in patients. When your healthcare provider prescribes blue Xanax for anxiety or panic disorder the starting dose will be low and this dosage may be gradually increased.