Now Vitamin C-500 Anti-Oxidant Protection With Rose Hips Tablets 100'Samino acid metabolismneurotransmitter synthesis, and the utilization of many nutrients, such as folic acid and iron. It is also a highly effective antioxidant that can help maintain healthy tissues by neutralizing free radicals generated during normal metabolism and exposure to environmental stressorsRose hips, which are natural sources of ascorbic acid, have been included to complement this formula.