TWO YEARS EXPIRED and mine's still fine.
Have been using an opened 10lb bag of ON's 100% Whey - Vanilla Ice Cream for a month now that was TWO YEARS expired. I was leery, but live in a dry climate and it was in a dark cabinet. Decided to give it a try. Been using two scoops twice daily.
The consistency, taste and results are the same as when I had first opened it, before the expiration date. Very glad I didn't throw it out, as I had about six pounds of it remaining. Seeing good gains with my workout and whey supplementation.
Hey what do you mean by clumps?
[QUOTE=coreywedel12;706579061]I agree with the rest. i am a biology major and have gone through the whole process of bodyworks haha. you should be fine as proteins in our body cant really expire either. however, if water or condensation has entered (clumps exists) that portion will not be good because it is technically "used up" already. by this i mean the chemical reaction of the product has already started and finished and will no longer have an effect on your body.
Goodluck with the lifting![/QUOTE]
Hey what do you mean by clumps?? Like certain clumps form with protein powder but they easily spread out. Not really "humid" clumps that look like water has touched them.