Vitamin C is required for many functions in the body. Helping to support the immune system and normal functioning of the nervous system and increasing iron absorption. Comes in a great value 1 year supply.nFeatures of Nutri Within vitamin C 1000mg 365 tablets 1 year\'s supplynContributes to the protection of cells from oxidative stressnSupports the immune systemnContributes to maintenance of normal function of the immune system during and after extreme physical exercisenSupports collagen formation for the normal function of blood vessels, bones, cartilage, gums, skin, and teethnContributes to normal psychological functionnSupports normal functioning of the nervous systemnIncreases Iron absorptionnContributes to the regeneration of the reduced form of vitamin E