A friend of my parents (who is a Dr.) told us once that drugs don't "expire" and are good for years. But if the doc's told you that, you would be more likely to keep them around once you felt better, this way, if you think they expire, and you come down with something you have had before, they get to charge you for another office visit and the pharmaceutical companies get to make more money selling you new drugs. I will check with him when I talk to him again to confirm but that's what he told us. It makes sense, when a drug is produced, it can stay on warehouse or pharmacy shelves for months or even years. Makes ya go Hm.....I think it's a conspiracy I tell ya, conspiracy.