Alpha-Lipoic AcidAlpha Lipoic Acid (ALA) is an antioxidant that is naturally manufactured in the human body and is unique in that it functions in both water and fat environments. ALA can also recycle vitamins C and E and some other antioxidants, enhancing their activities. * Beyond its direct antioxidant function, ALA supports glutathione production, participates in healthy glucose metabolism, helps to protect nerve tissues, and promotes healthy vascular function.