Plant protein powders can cast for an extremely long time, perhaps even as long as a couple of years.

Rice protein powder lasts extremely well and manufacturers often provide expiry dates up to 2 years.

Pea protein powder can last a very long time, possibly up to 2 years from manufacture if stored correctly.

All protein powders degrade over time, but beef protein powder will last for a good long while if stored correctly in air-tight containers in a cool dark location.

Egg protein powder like most protein powders, lasts a good long while if stored in an air-tight container in a cool dark location.

Casein protein powder can last a very long time, possibly up to a couple of years. However, referrer to the manufacturers expiry date for best results.

Soy protein powder is designed to last, and last it does! In some cases soy protein powder can last for up to two years, if stored correctly.