l-isoleucine

L-isoleucine is an essential branched-chain amino acid (BCAA). It's essential because your body can't make it and has to get l-isoleucine through foods. Brown rice and whole wheat products are good sources of l-isoleucine, and dietary supplements provide another way to get this important BCAA.

L-isoleucine comprises about eight percent of the total amino acid count in your body's protein structures, and l-isoleucine is the fourth most concentrated amino acid in muscle cells. Along with L-valine and L-leucine, L-isoleucine completes the triangle of BCAA support for advanced muscle recovery!*