Vicodin - how long after expiration date is it still good?

Technically, it's not any good after the expiration date... however, I've heard from a doctor that usually, if it is kept in a dry dark place that doesn't get too hot or cold, it should be good for a few more years on top of that. Often times with controlled substances, the shelf life is simply put on the bottle in order to keep track of the meds, and encourage disposal of them if they haven't been used for a period of time, and has nothing to do with a true shelf life. Antibiotics are very very different on the other hand, and have a very specific shelf life. Once it's expired, it really is no longer any good. Chemical compounds will last even longer, as they're... chemicals. Vicodin is a semi-synthetic, so... I'm not really sure how that would effect it in the long run.

I sincerely hope that you're using it wisely, and not for kicks, as it's obviously not a doctor that's recommending the use of this med. I say this only out of concern, and hope that you don't take offense.

Sincerely,
Jeff K