I have just found a bottle of Bayer low dose 81 mg asprin, expiration date of 2013, it is unopen. Is this still good?
If it has been stored under cool dry conditions it is probably OK. It certainly won't hurt you. Be sure the pills are not stuck together.
smell it, if it smells like vinegar, the salicylate (the active ingredient in aspirin) is not longer any good.