Alpha lipoid acid is a powerful antioxidant and supports the regeneration of antioxidants. Alpha lipoid acid also appears to function as a coenzyme in both antioxidant and metabolic functions. Alpha lipoid acid is a naturally occurring substance. Alpha lipoid acid is both water and fat soluble, it is present in virtually all parts of the body. As part of this antioxidant network, alpha lipoid acid may help alleviate the effects of oxidative stress for the human body.