UltraCruz Equine Iron Charge Supplement for Horses is a supplement for horses that contains important vitamins and minerals, such as Iron, a mineral that is essential for the formation of hemoglobin. Each serving provides iron (as Ferrous Gluconate), and a comprehensive selection of key vitamins and minerals designed to support energy and stamina in horses. This high-quality supplement is excellent for use in horses that are undergoing rigorous training, that lack stamina, and horses that are easily tired by exercise. This supplement may help support energy levels by providing key factors important for energy in horses. In the hemoglobin molecule, Iron binds to oxygen and carbon dioxide, which allows hemoglobin to transport oxygen from the horse's lungs to muscle tissue and carry carbon dioxide away. Zinc is involved in many enzyme systems in the body, ranging from connective tissue formation and antioxidant protection to carbohydrate metabolism and immune system function. It is most recognized for its role in supporting healthy skin and hooves. Choline is an essential nutrient that is a precursor of acetylcholine (a neurotransmitter). Cobalt is necessary to produce Vitamin B-12, which works with Iron and Copper to support healthy red blood cells. All of these key ingredients work together to help support energy and stamina in your horse.