By keeping them in the fridge the exp date can usually be extended, however, like the other responses you don't know how the bottle was kept before you acquired it. One thing that would destroy the pills would be if by some small chance some moisture made its way into the bottle (which is why vac-sealing then freezing is done). If you're set on running phera and have doubts about your pills being good I'd sell them on ebay, probably could net you around $50, then buy a clone. Good luck!