Optimum Nutrition's Gold Standard 100% Whey relies on pure Whey Protein Isolates as the primary ingredient. Combined with ultra-filtered whey protein concentrate, each serving delivers 24 grams of all-whey protein and 5.5 grams of naturally occurring Branched Chain Amino Acids (BCAAs), highly valued by athletes for their muscle-building properties. With a tempting selection of 10 flavors, ON Gold Standard 100% Whey ensures your workout recovery remains exciting.