How does medicine and supplements degrade?

How does medicine and supplements degrade?

What physically on the molecular level causes them to expire?

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en.wikipedia.org/wiki/Half-life#Half-life_in_biology_and_pharmacology
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Chemical decomposition

Judaism.

Yes but how does that happen.

en.wikipedia.org/wiki/Half-life#Half-life_in_biology_and_pharmacology

depends on the drug, for example, the ester in aspirin is readily hydrolyzed

a lot of things eventually will be subjected to oxidation by reaction with atmospheric oxygen - it isn't necessarily fast but it happens

>en.wikipedia.org/wiki/Half-life#Half-life_in_biology_and_pharmacology

Wow nice going idiot.
Nobody asked for the biological half life.

It was asked how long a substance takes to degrade just sitting on it's own.

It's incredibly how stupid you are.

So it's only oxidation?

What if you kept the medicine in an oxygen free container?

Also wouldn't only the outer part of the pill degrade? How would oxygen penetrate further than that to degrade the entire pill?

what if they were in a vacuum?

come on friend, this used to be a nice board