Iron Bisglycinate provides an optimal way to supplement iron, which is essential for red blood cell formation. It helps fight fatigue and other symptoms of iron deficiency in athletes and others.   If you are iron deficient, taking a daily iron supplement can help keep your levels at an appropriate level. Iron plays a prominent role in many life-sustaining functions, as it is an essential element for blood production. In addition, it is vital to the proper function of hemoglobin, a protein which is needed to transport oxygen from the lungs through the bloodstream to the tissues of the body. Ferrotamin Sustained- Release provides a controlled delivery system, delivering iron slowly to your body. Clinical studies have shown that slow release formulations of iron can cause fewer of the side effects (nausea and abdominal discomfort) that are common with immediate release of iron supplements.