100% whey. 24 g protein. 5.5 g BCAAs (Naturally occurring). Helps build and maintain muscle (When taken over time with regular resistance training). Supports endurance and recovery. No artificial growth hormones (No significant difference has been shown between milk derived from rbst-treated and non-rbst treated cows). Why Gold Standard 100% whey protein drink? Packed with 24 grams of high quality protein per serving to help build muscle when combined with physical exercise and a healthy diet. 5.5 grams of naturally occurring BCAAs to support muscle recovery Strength training. Sports performance. To find out more about the science and ingredients behind our products, visit www.optimumnutrition.com. Manufactured in the USA. This product contains ingredients of international and domestic origin.