Rapid release capsules Food supplement Alpha Lipoic Acid is a fatty acid that is found naturally in every cell within the body. It is soluble in both water and lipid based tissues and functions well alongside vitamins C and E as well as glutathione. Rapid release capsules Food supplement Alpha Lipoic Acid is a fatty acid that is found naturally in every cell within the body. It is soluble in both water and lipid based tissues and functions well alongside vitamins C and E as well as glutathione.