Casein & Gluten Free Ultra Tested Tested for More Than 950 Contaminants! Hypoallergenic Dietary Supplement Kirkman’s hypoallergenic iron capsules each contain 5 mg of elemental iron. This product is part of our Bio-Max Series that uses forms of nutrients that have clinically proven to be among the best absorbed and most highly bioavailable. Iron is an important mineral in the body. It plays a prominent role in the production of hemoglobin and myoglobin and the formation of red blood cells and their oxygenation. Iron is also essential for many enzymatic functions and is important for growth. Iron is found in multiple food sources including meat, eggs, vegetables, grains, fruits, as well as many herbs and spices. Many physicians recommend an iron containing dietary supplement because it is thought that only about 10% of the iron we ingest from food is actually absorbed. Iron in dietary supplements can also be poorly absorbed depending on the source of the iron. It is generally accepted that ferrous salts are absorbed somewhat better than ferric compounds. Iron supplements can be irritating to the digestive tract, so the correct choice of an iron supplement is important for both absorption and gastrointestinal tolerance. Kirkman uses a form of iron from Albion Laboratories, Inc., called ferrous bis-glycinate chelate (Ferrochel), which has been tested for both safety and absorbability in animals, adults and children. Tests results indicate that ferrous bis-glycinate chelate offers a safe, absorbable form of iron that, when compared to ferrous sulfate -- a widely used form of iron in supplements, offers advantages in tolerability and bioavailability