Dietary Supplement. Gentle on the stomach. Vegetarian. Compare to Feosol Carbonyl Iron (Feosol is a registered trademark of GlaxoSmithKline, Philadelphia, PA. This product is not manufactured or distributed by GlaxoSmithKline). Supervalu Quality Guaranteed: We're committed to your satisfaction and guarantee the quality of this product. Contact us at 1-877-932-7948, or www.supervalu-ourownbrands.com. Please have package available. Gluten free. No added: lactose or preservatives.