[meristohm]

Expiration dates are maybe a hedge by the manufacturer? Our pediatrician said of some medication we had on hand that it’s probably good way past the printed date, maybe a bit less effective over time, and I’ve heard this about Aspirin, for example. What drugs actually break down quickly over time of kept in the recommended temperature range?

[nbernard]

I believe that's mostly true, but, on the other hand, some drugs (notably antibiotics of the tetracyclines family) become quite dangerous as they degrade...