Whey Protein Isolates (WPI) are the purest form of whey protein that currently exists. By using WPI as our primary protein source, we're able to pack in 24 grams of the purest protein with a lot less of the fat, lactose, and other stuff that you can do without.
What makes this formula even better is the fact that it contains no artificial flavors or sweeteners. There's no question this is the standard by which other whey proteins are measured.