Lipoic acid is a highly effective, biologically available and well researched antioxidant that works in both the fat and water soluble portions of human cells. Lipoic acid supports healthy liver regeneration, immune function and circulation, as well as vision and glucose metabolism. It also supports cardiovascular and neurological health. Being a powerful antioxidant, it protects and repairs cells and reduces damage caused by oxidation. Lipoic acid also improves the effectiveness of vitamin C and E, two well-known antioxidants.