Some people throw things out as soon as they expire.  Others keep things years after the expiration date.  What’s the safe thing to do?  According to the Harvard Medical School Family Health Guide, the majority of drugs are still safe to use – even 15 years later, but I don’t want to test that out!  According to the Harvard Guide, “Since a law was passed in 1979, drug manufacturers are required to stamp an expiration date on their products. This is the date at which the manufacturer can still guarantee the full potency and safety of the drug.”  In my opinion, I think it would be good to talk to one’s doctor and pharmacist to make sure a particular drug is safe to use.   It’s also good to research several reliable sources.