Optimum Nutrition (ON) Gold Standard 100 Whey Protein Powder Optimum Nutrition Gold Standard 100% Whey Protein Powder gives you the purest source of protein to fulfill your daily requirement of this nutrient. With Optimum Nutrition 100% Whey Protein, you have the advantage of ultra-filtered whey protein isolates that are extremely easy for the body to absorb. With every 30 g serving, you get 24 g of whey protein, giving you a whopping 78% concentration by weight for maximum results. This supplement is also known for its high mixability, allowing you to make a lump-free, smooth protein shake each time. Gold Standard 100% Whey Blend – 24g blended protein consisting of whey protein isolate, whey protein concentrate, and whey peptides/hydrolysates to support muscle recovery. Primary protein source is Isolate, they don’t call it the Gold Standard of quality for nothing.