How Long Does Xanax Withdrawal Last - Ask.com. wikiHow - How to do anything. 6 authors | 8 revisions | Last updated: June 30, 2012. brand name Xanax, is a medication from the benzodiazepine family that is used. The use of alprazolam or other GABA-type CNS depressants over long periods of time. It is possible to reduce your alprazolam withdrawal symptoms by.