I have never used it until recently. I find that it does not make me feel good. At first I got a mix of whey protein concentrate and isolate so that appeared to be the reason for the bad gas I was having. So I got whey protein isolate only and I still don't feel very good. I think there are healthier things to eat and unless all this added protein actually helps me in some way, I will discontinue the whey.
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
Starting squat: 45lbs. Current squat: 180 x 2. Current Deadlift: 230 x 2