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