Gold Standard 100% Whey contains Whey protein isolates (or WPI) Rated 90+% pure protein, WPI are known as the highest quality whey ingredient with the protein being extracted or 'isolated' from other components, making it extremely pure. Each serving of Gold Standard 100% Whey contains 24 grams of premlum whey protein to help muscle growth, and 5.5 grams of branched chain amino acids (BCAAs) Gold Standard 100% Whey contains Whey protein isolates (or WPI) Rated 90+% pure protein, WPI are known as the highest quality whey ingredient with the protein being extracted or 'isolated' from other components, making it extremely pure. Each serving of Gold Standard 100% Whey contains 24 grams of premlum whey protein to help muscle growth, and 5.5 grams of branched chain amino acids (BCAAs)