Vitamin C neutralizes free radicals in the body and protects tissues from oxidative stress. However, the needs are high and therefore it requires frequent use of vitamin C. Life Extension has added an antioxidant flavonoid, bio-ceserine that acts as a vitamin C enhancer. Bio-Cresteine ​​prevents oxidation of Vitamin C. Vitamin C thus retains its concentration and is recycled to the body. The synergistic relationship between bio-cesetin and vitamin C enhances the efficacy of both molecules in organs and tissues. Vitamin C with bio-quercetin with phytosome provides excellent efficacy and antioxidant protection.