100% Whey Gold Standard Double Rich Chocolate, Whey Protein Isolates Primary Source * 24 g protein * 5.5 g BCAAs * 4 g Glutamine & Precursors * 149 servings.Whey Protein Isolates are 90% pure protein by weight. They are the purest and most expensive form of whey protein that exists. That’s why they are the first ingredients you read on the 100% of Whey Gold Standard label. By using Whey Protein Isolate as our primary protein source, we’re able to pack 24 grams of the purest, muscle-building protein per serving, and a lot less of the fat, cholesterol, lactose, and other stuff that you can do without. There’s no question this is the standard by which other whey proteins are measured.