Does Whey Protein Powder expire?

Yes, whey protein powder does lose its protein efficiency and expire, but it lasts a good long while when stored correctly. For best results your whey protein powder should be stored in an air-tight container in a cool and dark location. Don’t store protein powder in the fridge or freezer as condensation can form inside the container when you take it out and moisture will cause your protein powder to go bad quickly.

Once your protein powder has exceeded the manufacturers expiry date it should be replaced with a fresh product, as the protein efficiency is greatly diminished from this time.