Xanax 2 mg is used to relieve excess (moderate to severe) anxiety and to treat anxiety associated with depression. Always briefly endure the pharmacist medication guide before you start to use and each time you get refills. Xanax 2 mg is not to be used for mild anxiety associated with the stress of day-to-day life situations. Xanax 2 mg is safe if used at prescribed doses for the prescribed duration as advised by your doctor.