1 mg will defintiely get you to sleep quickly, but youll feel groggy tomorrow. Half of mg = mg, a dose at which alprazolam is active in. The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only. Apr 13, - The recommended daily dose of Xanax is to mg throughout the day. . I take a one time dose before sleep of 5 mg every night for about 5 years .. post's & am VERY suprised by the response: (re: max dose of xanax Xanax half life: how long does · Mixing Xanax with alcohol · Snorting Xanax.