''Whey protein concentrate has been shown to raise glutathione higher than normal levels and beyond that of any other protein source studied.''
Awesome! Im very skeptical when it comes to new products and all the hype and marketing that comes with it. I never saw the need to switch my concentrate protein for isolate or hydralized. I din´t know about glutathione.. instead my decision was based on the fact that the body can wait what? 5 more minutes to digest concentrate as oposed to hydralized whey?
Granted most builders back in the days used roids but they all ate chicken and eggs for protein and those are hour long digestion proteins and they still grew pretty big.