Optimum Nutrition | Gold Standard Whey 2IbWhey Protein Isolates are 90% pure protein by weight. They are the purest and most expensive form of whey protein that exists. Thats why they are the first ingredients you read on the 100% Whey Gold Standard label. By using Whey Protein Isolates as our primary protein source, were able to pack 24 grams of the purest, muscle building protein per serving, with a lot less of the fat, cholesterol, lactose, and other stuff that you can do without. Theres