Iron is an essential mineral and an important component of hemoglobin, a substance in red blood cells that carries oxygen from our lungs to the rest of our body. Hemoglobin uses about 2/3 of our body's total iron. If we're lacking iron, our body can't produce enough red blood cells, which can affect our oxygen level and make us feel tired. Chewable Iron is a convenient way to get the iron we need to help maintain healthy blood.