welcome to healthcaremagic.com.iron is mainly absorbed as the Fe+2 ion and as heme iron. Ferric iron is absorbed very poorly. Ascorbic acid
( vitamin C
) helps keep the iron in the +2 state and forms a complex that is more easliy absorbed in the enterocyte.therapeutic dose of 3-6 mg/kg/day of elemental iron causes increase in 0.25-0.40 increase in HB per day.