BigFlex EAA is a dietary supplement formulated from 9 full-fledged essential amino acids. Amino acids are the components of protein that form the basis of muscle growth. The product contains 5g BCAA, which is a unique blend of leucine, isoleucine, and valine. These are the three branched-chain amino acids that are critical in promoting muscle building in workout sessions. The product also aids in maximum muscle recovery.