Children's Iron Immunity, 60 Chewable Tablets, I'm NutrientsI'm Nutrients Children's Iron Immunity Children's Chewable Iron Supplement. With Iron and Vitamin D3 to Support Immune System Health. Suitable for Children 4+ Years. Tropical Flavored. Dietary Supplement. Iron Immunity is designed to help bridge the gap in dietary iron intake while supporting a healthy immune system. We know picky eaters can struggle to get enough iron each day, and maintaining adequate iron levels is essential for immune health.