ON 100% Whey Gold Standard is multisource whey blend containing four different types of whey proteins. Optimum Nutrition has raised the standard by which all other whey protein supplements are judged. A quadraplex blend containing Microfiltered whey Protein Isolates, Ion exchange whey protein isolates, ultra-filtered whey protein concentrates and whey peptides. Whey Protein Isolates are 90% pure protein and most expensive form of whey protein. By using WPI as the primary ingredient along with premium ultra-filtered whey protein concentrate (WPC), ON 100% Whey Gold Standard packs 24 grams of protein into every serving with a lot less of the fat, cholesterol, and lactose to support your muscle building needs after training. This superior quality powder has been instantized to mix easily using a shaker cup or just a glass and spoon.