Natural Factors Big Friends Chewable Iron 10 mg is a fun and delicious way for children to fulfill their iron requirements. Iron is a factor in the formation and proper function of red blood cells. When children do not consume enough iron through their diet, supplementation can help prevent iron-deficiency anemia and associated tiredness and fatigue. Children ages three and up will love the chewable sour-peach-flavoured tablets that are easily absorbed and gentle on the stomach.