Liquid Iron provides 10 mg of iron bisglycinate per teaspoon. This chelate form of supplemental iron is easily absorbed and one of the best tolerated forms for sensitive stomachs. This potent liquid formula is designated to provide iron for your child’s needs. Iron, an essential trace mineral, is required for healthy red blood cell formation, and oxygen transport by hemoglobin. Young children and teenagers are among populations at risk for inadequate intake.