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A 44-year-old member asked:

Is it a bad idea to take expired protein supplements (powder)?

1 doctor answer1 doctor weighed in
Dr. Bryan Levey
Pediatrics 28 years experience
Yes: Substances, whether grown in a field or created in a laboratory or factory, change over time. They can lose potency, and/or they can lose nutrient value. The expiration date is the outer edge of when the manufacturer will guarantee potency and/or nutrient value. Beyond that time, you may be taking something that will either not have the desired effect or possibly have a negative one.
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Last updated Oct 1, 2012


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