Optimum Nutrition's Gold Standard Whey uses pure Whey Protein Isolates as the primary ingredient. Combined with ultra-filtered whey protein concentrate each serving provides 24 grams of all-whey protein and 5.5 grams of naturally occurring Branched Chain Amino Acids (BCAAs) which are prized by athletes for their muscle building qualities. With 10 tempting flavors to choose from ON Gold Standard Whey gives you plenty of ways to keep workout recovery interesting. To instantly check the authenticity of your ON product SMS us your 6 digit unique code (on the pack) at 57575 or visit our wesite AUTHENTICATEON.in