Buying XANAX online allows individuals to easily access this medication from the comfort of their own homes. No more waiting in long queues at the pharmacy or rushing to make it before closing time. Xanax is a benzodiazepine prescribed for anxiety. It works by lessening abnormal excitement in the brain and the effects of certain natural chemicals in the body. brain to promote calmness and a relaxed feeling. It helps to balance out chemicals in our bodies.