Gold Standard 100% Isolate 930 g from Optimum Nutrition is a supplement designed for those seeking maximum quality whey protein. It features a sophisticated filtration process that removes fats and sugars, resulting in a high-purity protein. Each serving provides more than 80% pure protein, 25 g ultra-filtered, and 5.5 g of natural BCAAs. Additionally, part of the isolate is hydrolyzed for fast digestion. Available in a 930 g container, in vanilla and chocolate flavors. This product is gluten-free and has been tested against banned substances.