Millions of customers are satisfied with Optimum Nutrition 100% WHEY GOLD STANDARD, and they can't be wrong! Even at the dawn of protein production, Optimum Nutrition set the standard according to which all subsequent whey protein ingredients were produced. Now we are setting a new standard, with the third generation Optimum Nutrition 100% WHEY GOLD STANDARD. Like its predecessors, ON 100% WHEY GOLD STANDARD contains first-class optimal dietary supplements that make up the protein mixture: Microfiltered whey Protein isolate. Ion-exchange isolate of whey protein. Ultrafiltered whey protein concentrate. Peptides of whey.