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 structure, immune function and circulation. 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.