Why does pills (eg. painkillers) have an expiration date? Aren’t they usable after that date?
In: Chemistry
The National Institute of Health (NIH) tested more that 100 drugs and found that 95%+ had an efficacy of 92% after 4 years and 84% after 5 years. Both these amounts are legal concentrations. The drugs that didn’t last were liquids and antibiotics. That said, I read that aspirin breaks down faster and should be replaced sooner.
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