I have several packs of Sirolimus that have just expired. They were manufactured in 2022. Do you think it’s safe to take the expired Rapamycin?
Thanks.
Just expired should be fine. However, if you are worried, you can take a blood test to see your levels. As far as I know, it should not be toxic, but it might lose potency if it gets too old.
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Expiration date is normally based on testing while storing in conditions stated on the package.
If the producer has not tested for longer then two years of storage that will be on the package; criterion is at least 95% of described quantity/concentration must still be there.
(the producer may have no incentive to make longer storage possible! $$$)
Rarely if ever it is about toxic degradation products.
If you did store it dry and cooled it may be good much longer but you have no guarantee whatsoever.
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