Iron Plus C is a highly absorbable iron formula used to support and maintain body stores of iron.* The Vitamin C improves the intestinal absorption of the iron.* Iron is an essential mineral and it is used to make hemoglobin, the oxygen-carrying component of the blood.* Iron is also used to produce red blood cells.* The body needs an adequate supply of iron to produce the number of normal red blood cells needed to maintain optimal health.* Although many people in the U.S. get enough iron from their diet, some must take additional amounts to meet their needs.