I have a generic brand of xanax (alprazolam) that expired 10/24/12. can i still take them?

If you must, prob'ly: Meds dispensed by a pharmacy will have an expiration date of 1 year after the date of dispensing. It stands to reason that not every drug will lose its potency/"self destruct" exactly one year after you purchase it. I usually recommend that if a pt has leftover meds, and no new rx to fill, you can certainly continue to use the expired med until you do get a new rx. If effective, then you've saved$.

Yes: The actual shelf life of a medication is usually longer than the expiration date suggests. They will likely be a little less potent, but they should not be harmful.