eisen kapseln90 iron capsules with 56 mg iron from iron bisglycinate For cognitive function, energy metabolism, blood formation, oxygen transport & immune system * Bioactive iron bisglycinate Suitable for adults and children 60 day satisfaction guarantee What makes our iron capsules so special? Iron is an essential trace element that contributes to the normal formation of hemoglobin, the red blood pigment. This is important for the transport of oxygen in the body.