Considered by athletes and bodybuilders as the three most important essential amino acids, branched chain amino acids (BCAAs) are a combination of L-Leucine, L-Isoleucine and L-Valine. These amino acids are the building blocks of protein and are considered �essential� since the body cannot produce them for itself. This sports nutrition formula contains 1 gram of fermented (vegan) BCAAs per serving in an extra potent 4:1:1 ratio, combined with BioPerine to support increased absorption.