L-Isoleucine

L-Isoleucine is one of the three essential branched-chain amino acids (BCAAs) that play a vital role in energy production, muscle recovery, and endurance. Unlike L-Leucine, which primarily stimulates protein synthesis, L-Isoleucine is especially important for glucose uptake, hemoglobin production, and sustained energy during exercise. Since it cannot be synthesized by the body, supplementation is often recommended for athletes and individuals with active lifestyles.