Xanax is a Very effective product for treating anxiety issues, particularly panic disorder. It is a class of drugs called a benzodiazepine. Xanax 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 body. Xanax is available in 1mg,2mg,3mg, and 0.5mg.