Xanax 1 mg tablets are used in treatment of panic disorder and anxiety. Xanax is also known as Alprazolam (Benzodiazepine). The chemical messanger called GABA helps in suppressing the abnormal and excessive activity in the brain of the nerve cells. Xanax 1 mg next day delivery is provided to you in UK by top online pharmacy once doctor prescribes you and take this medicine as per his advice.