Firstly, Alprazolam, available under the trade name Xanax xr 3 mg is a potent, short-acting benzodiazepine anxiolytic—a minor tranquilizer. It is commonly used for the treatment of anxiety disorders, especially of panic disorder, but also in the treatment of generalized anxiety disorder (GAD) or social anxiety disorder. It was the 12th most prescribed medicine in the United States in 2010. Alprazolam, like other benzodiazepines, binds to specific sites on the GABAA receptor. Anxiety associated with depression is also responsive to Xanax. Buy Xanax xr 3 mg Online For Sale.