The essential branched-chain amino acids L-leucine, L-isoleucine and L-valine (BCAA) in a liquid form. The fluid enables the fastest possible delivery of amino acids and every half-litre package contains 40,000 mg of BCAA. During intensive physical activity, there is a loss of individual amino acids, along with other important substances. Amino acids are the building blocks of each protein. A sufficient intake of quality protein, together with an optimal range of amino acids, contributes to muscle growth. Branched-chain amino acids are among the essential acids that the body must receive through the diet because their synthesis from other sources does not occur in the body.