Since 1947 Iron Bisglycinate Non-Constipating Gentle on Your Stomach Halal Gluten, Wheat & Dairy Free Suitable for Vegetarians K-Parve Dietary SupplementIron is an important component of hemoglobin, the protein that carries oxygen from the lungs to all tissues of the body and promotes normal red blood cell production and supports energy utilization. This formulation provides an advanced, patented form of iron which is non-constipating and gentle on the stomach.