Xanax 0.5 mg is for short-term treatment of anxiety, panic disorder, sleeping disorder, someone who has depression. It affects the brain & produces calmness. The person feels relaxed, can focus on his/her work. Xanax comes in different brand names or other forms, which may not be available in all forms or may not cover all the symptoms that 0.5 mg of Xanax covers. Don’t give this medicine to anyone in your family or friends. It can be harmful to his/her health if they don’t consult directly with the doctor. Taking these medicines for a long time & wanting to stop it so without consulting with your doctor does not stop these medicines.