Help build lean muscle with Optimum Nutrition?s Gold Standard 100% Whey. This protein powder drink mix uses pure whey protein as the primary ingredient. Combined with ultra-filtered protein concentrate, each serving provides 24 grams of all-whey protein and 5.5 grams of naturally occurring branched chain amino acids (BCAAs). BCAAs are prized by athletes for their muscle building qualities. Alongside those essential amino acids, this whey protein powder is packed with vitamin C and vitamin A. This iron supplement for athletes has more than 20 tempting flavors to choose from and plenty of ways to mix the powder into your favorite beverage. Help build and keep muscle with this calcium supplement and protein powder. Optimum Nutrition is part of the Glanbia global nutrition group and has been setting the Gold Standard in sports nutrition for more than 30 years ? helping performance-focused athletes achieve their goals. We are proud to say that we are one of the few sports nutrition companies who own and operate our own production facilities. We take as much pride and care in crafting our award-winning supplements as our consumers do with crafting their fitness accomplishments.