There's also the not-irrelevant issue that testing is slow and potentially other than free. How do you find out when a drug expires? You have a bunch of it sit around and test it periodically, right?
I assume that would be done after bringing a drug to market, otherwise drugs could easily be delayed 10+ years if they're shelf-stable.
I assume that would be done after bringing a drug to market, otherwise drugs could easily be delayed 10+ years if they're shelf-stable.