White Xanax Bar is an antianxiety medication that is helpful in treating anxiety disorders, panic attacks, and phobias in adults. Anxiety is a state of restlessness and tension characterized by fear, anxiety, and dread. Thus, White Xanax Bars, developed by the pharmaceutical company Pfizer, are highly recommended drugs in the United States to treat these illnesses. The white Xanax bar contains 2mg Alprazolam pills with the imprint G3722 in a long rectangular 'bar' shape with three grooves for easy administration in up to four pieces.