Blue Xanax Bars are 2Mg of rectangular Alprazolam bars indicated to treat and manage anxiety disorder, phobias, panic attacks, and GAD. It is a highly potent and powerful anxiety and tension reliever. Blue Xanax Bars B707 efficiently treats anxiety and its effects. The blue Xanax bar bears the imprint "B707" on one side of the 2mg pill, and it is critical to take the appropriate dose based on the underlying condition.