Supports Muscle Development. 100% Natural. Nothing Artificial. Glutamine Rich Whey Protein is a 100% natural protein concentrate of Whey and is specially ultrafiltered under low temperature to be low in fat, lactose and carbohydrates. It supports muscle development because it is the richest natural source of BCAAs (soleucine, Leucine and Valine), important fuel components of muscle tissue. BCAAs are depleted from muscle tissue following strenuous exercise, which can cause catabolic loss of protein. BCAA"s supress proteolysis which is the breakdown of muscle tissue. BCAA"s have been known to enhance performance in moderate as well as intense exercise by improving endurance. Each scoop provides a total 4.0 grams of BCAAs. No other source of protein provides as much BCAAs as Whey. Jarrow Formulas 100% all natural Whey Protein is rich in glycomacropeptides, which are biologically active proteins that improve the digestion and absorption of nutrients, and growth of bifidobacteria. Whey Protein is extremely rich in essential amino acids that raise the biological effeciency of the protein.