[fini]

"I think this is true about a lot of medicines, too. I use an allergy medicine very infrequently because I don’t want to be caught in ‘rebound effect’; so I don’t buy a lot of it. It seems to be just as effective when it’s several years ‘expired’.

Same thing with aspirin."

Ha, ha. In the 1990s, I inherited a very large bottle of aspirin that had expired in 1987. I still use it and it still works.

It is a very large bottle and I rarely need aspirin.

[toothfairy86]

Aspirin smells like vinegar when it gets old.

[reformedliberal]

very large bottle of aspirin that had expired in 1987. I still use it and it still works.

It is a very large bottle and I rarely need aspirin.
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IIRC (and I’m not 100% positive), aspirin that is past due date has a vinegar-y taste/smell.

I know we’ve had that Tylenol/Oxycodone combo from past dental extractions that definitely lost their pain-killing ability.