This formula is based on the ratios of amino acids found naturally in high biological value (BV) protein sources. l-Cysteine in this formula is derived exclusively by fermentation, therefore it is uniquely from natural and non-animal origins, providing a vegetarian amino acid blend. Amino acids provide important support for athletic training, as supplementation promotes recovery, protects DNA from oxidation, lessens occasional muscle soreness and fatigue, enhances muscle performance, and enhances the body's oxygen carrying capacity. From trained athletes to the elderly, amino acids also play an important role in immune health, primarily attributed to support for healthy glutamine and glutathione levels. Alpha lipoic acid and alpha ketoglutarate provide additional support for mitochondrial function and energy. Vitamin B6 acts as a cofactor for healthy amino acid and energy metabolism.