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.
Whey protein powder lasts a good long time, possibly as long as a couple of years, but it should not be used once the manufacturers expiry date is exceeded.
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.
We would recommend disposing of soy protein powder after its manufacturers expiry date has been exceeded.
Hemp protein powder lasts for a long time if stored correctly. For best results you need to store hemp protein powder away from light and moisture.