How long is protein powder good for after it has been opened?

[friedrice683]

I have an opened Cytogainer from last year and I also have about 15lbs of protein powder going...some containers which have been opened about 3 months ago.


Will all these be good until their expiration dates?

[Black_Label]

They should be unless they are left open, in heat, or exposed to excess moiture. All of which my 10 pound bag has been through =X

Trying to finish it faster.


If you have bags moving it to tubs can save it due to the zip lock seals that fail so often