The Bio C Complex nutrition supplement from Quest provides the body with vitamin C along with bioflavonoids, a combination of ingredients that strengthens capillaries and supports the overall good health of the heart and the cardiovascular, maintains good cholesterol and provides mild anti-histamine action. Also, vitamin C has a significant effect against infections and colds, is essential for a healthy immune system and protects the cells from oxidative damage caused by toxins and the environment. In addition, it is essential for the synthesis of collagen and therefore an important structural component for skin connective tissue (elasticity), skin vessels, tendons, ligaments and bones, enhances the action of hormone anti-stress, maintains eye health and increases the absorption of iron.