How long after expiration can you take hydrocodone?

Typically Hydrocodone expires one year after the fill date. It begins to lose its potency after that.

The previous person to answer this question assumed that you're a drug addict. I, however, am not as judgy, and assume that you have an old prescription and was wondering if it was viable for a new illness (as in, random migraine headache that Advil won't touch, and you found an old script from when you had your wisdom teeth taken out).