ya speak with your doctor about it marvel. he probably will NOT give you xanax but another type of benzodiazpene to help you through those first 24 hours.
Not giving medical advice but............. benzos of any type definitely make withdrawal from dope easier to go through (they dont turn it into a sunny picnic but its more bearable)
Stay strong marvel, hope we can catch up soon also, havent spoken to ya in a minute ;o