BCAA Xpress Sugar-free Gluten free Lactose-free Contains a 2:1:1 ratio of branched-chain amino acids 5g of pure BCAAs per serving Leucine, isoleucine and valine are branched chain amino acids (BCAAs) and are among the essential amino acids for humans. BCAAs account for approximately 35% of the essential amino acids found in muscle proteins. It is important to include the right amount and type of amino acids in our diet as they contribute to the development and maintenance of muscle mass. BCAA Xpress contains branched chain amino acids in a 2:1:1 ratio, as they are naturally found in the body. This product provides a convenient way to consume these essential amino acids. BCAA Xpress is also flavored, providing a pleasant taste experience.