Nitroglycerin - I've had a bottle UNopened since 2000 when I had a stint inserted. Does it need to?

exposure to light alone is bad for this med so yes i garentee it does

If there is no expiration date on the bottle toss it but not before you call your doctor and get a new script and call the pharmacist and get advice on whether you should God forbid take pills from this bottle if needed before you get the new prescription. This is what I would do I can not tell you for sure that the pills are good or not. I hope this helps Good Luck and God Bless

I would recommend getting it replaced. Unless you can find a visible expiration date on the bottle somewhere, I don't think you should use it.