I know most supplements are still perfectly good at the expiration date, but... how old is too old?
For example, let's say you had some UGL Test that expired in, oh I don't know... for this theoretical example's sake, let's say.... 6-2009. Five years past expiration. Still good? Not good? Just not as potent? Not sterile anymore?
If not good any longer, what would those in the know say is the "most expired" you'd still be safe taking?