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 part of the branched-chain amino acid (BCAA) family. BCAAs are among the 9 essential amino acids for humans, meaning that our bodies cannot produce them. Our only source of these amino acids is our daily diet or dietary supplements. Branched-chain amino acids make up 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, which, along with other amino acids, help create proteins that contribute to the growth and maintenance of muscle mass. BCAA Xpress contains branched chain amino acids in a 2:1:1 ratio, similar to how they are naturally found in your body. This means that using this product is an extremely simple and convenient way for anyone to supplement these essential amino acids. In addition, BCAA Xpress is flavored, making it an ideal choice for those looking for a tasty experience.