This Quest supplement provides one of the most important vitamins in a timed release format. Vitamin C is gradually released throughout the day for maximum effect. Vitamin C is a water soluble vitamin which is essential to the bodys overall health.This key antioxidant helps to fight against free radicals which can harm important cells and organs. Vitamin C helps to maintain healthy skin, gums, bones, teeth and immune system. It also plays a key role in the absorption of iron from food which is necessary for the formation of red blood cells. Quest have developed a unique time release formula to ensure optimal absorption and assimilation.