Tag: Opened protein powder

Research on product stability indicates that most protein powders are designed to last for a significant period. However, an opened bag's shelf life is significantly influenced by environmental exposure and proper storage.

According to research from the National Institutes of Health, whey protein can remain stable for up to a year when stored properly. The shelf life of an open bag of protein powder depends on a combination of factors, including the type of protein, its ingredients, and—most importantly—its storage conditions. An open bag of protein powder, when kept in a cool, dry place and tightly sealed, can typically last anywhere from six to twelve months, but signs of spoilage can appear sooner.