Does protein powder expire?

Protein powder expires, and it is recommended that users pay special attention to protein powder's "use by" or "sell by" date to determine if protein powder is safe to consume. The date printed is typically a year or more past the product's production date, and the powder is usually good for at least a few months past its printed date.

Due to the breakdown of chemical processes in the product, protein powder can lose its potency as it gets old, so the longer it is stored, the less nutritional value it offers the user. To extend its shelf life, keep the container in a cool, dry place with its lid sealed and away from any sources of heat.