One of my dearest friends is a stability chemist, responsible for 
setting those expiration dates. There is a wide margin of safety in set 
expiration dates, because breakdown of chemicals depends on storage 
conditions. So, if the medication is stored in a cool, dry, dimly lit 
environment in the original packaging, it may indeed be potent far 
longer than the expiration date, and if it's in a hot, humid 
environment, it may not. There are a few medications that break down 
into dangerous compounds - tetracycline being the poster child, whose 
breakdown products can cause kidney damage. Look up the particular 
medication to be safe.

Catherine Watson Genna BS, IBCLC  NYC  www.cwgenna.com

On 2/6/2021 2:16 AM, Julie Tardos wrote:
>   Expiration dates on medications only exist because the FDA makes companies
> use them.  These meds are very likely to be both safe and effective when
> they "expired" only 13 months ago.  The US military did studies on
> medication expiration dates, and as a result, they saved many millions of
> dollars by using medications well past their expiration dates.
>
> Julie Tardos
>
> ~~~~
> Edwards: <https://www.imdb.com/name/nm0000226/?ref_=tt_trv_qu>Why the big
> secret? People are smart. They can handle it.
> Kay: A person is smart. People are dumb, panicky dangerous animals and you
> know it.
> --Men in Black
>
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