I've had an accident that made me stop training for quite some time and I ended up with a sealed - never used nor opened - whey protein pot that expired Oct/2015.
Considering it's a powder and the package was closed and sealed, I opened and it still seems fine, with the same texture and smell as expected. I tried it and the flavour is very good as well.
What issues I could have using it? Would the proteins be "gone"? Could I have health problems?