Natural Factors Big Friends Chewable Iron - 10 mg - Contains SunActive iron, a well-researched and highly bioavailable source of ferric pyrophosphate iron. It is made using micronization technology that dramatically improves iron absorption into the body and is gentle on the gastrointestinal system so it does not upset sensitive stomachs. This formula is suitable for children ages three years and older and provides 10 mg of elemental iron per day. The chewable sour-peach-flavoured tablets taste delicious and help keep children and adolescents excited about taking a daily iron supplement.