Does Protein Powder Expire?

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Question

Does Protein Powder Expire?

ProteinPrice Editorial · Accepted Answer

Sealed protein powder typically lasts 18 to 24 months past its manufacture date when stored in a cool, dry place. Once opened, expect 6 to 12 months of peak quality before flavor and texture start to degrade. The powder rarely becomes unsafe to consume even past the printed best-by date, but loses potency over time as lysine and other amino acids slowly degrade. Definite signs to toss it: clumping into hard chunks, off smell (sour, rancid, or musty), color change, or visible mold around the lid seal.

Does Protein Powder Expire?: ProteinPrice.com