Dietary Supplement. Ferrol compound is unique dietary supplement containing essential vitamins and mineral salts, which help to strengthen the body. Vitamin and Mineral Facts: Vitamin A helps maintain healthy eyes and is necessary to maintain a healthy immune response. Vitamin D helps maintain healthy skin and helps in the development of strong bones and teeth. Vitamin B12 helps maintain healthy metabolism, blood cells and nerves. Iron supports the immune system. Manganese helps build strong bones. To report a serious adverse event contact 718-849-2030. (This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.) Product of Guyana.