Xanax (alprazolam) will result in sedation, drowsiness and somnolence for a side impact but isn't usually prescribed to assist with insomnia (difficulty sleeping) on a regular basis. Sleepiness after using Xanax commonly takes place within 15 to 45 minutes. Go on looking atSure, alprazolam (Xanax) together with other benzodiazepines have dependancy