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% Gold Standard Whey label. By using Whey Protein Isolates as our primary protein source, we’re 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. There’s no question this is the standard by which other whey proteins are measured. Whey protein is popular with active adults because it digests rapidly and is a rich source of amino acids to support muscle recovery. Whey protein isolates are the purest form of whey and the primary ingredient in Gold Standard 100% Whey. Each serving provides 24 grams of rapidly digesting whey protein with low levels of fat, cholesterol, lactose and other stuff you can do without. There’s no doubt this is the standard all other proteins are measured against.