Low iron counts and even anaemia due to iron deficiency is a widespread problem. Among adolescents, it will bring consequences on growth, school performance, morbidity and reproductive performance. Iron deficiency also has several negative physical symptoms such as tiredness, headaches and difficulty to concentrate. Conventional iron deficiency treatment with pharmacological iron doses often causes side effects such as abdominal pain, constipation and diarrhoea. Uptake for heme iron is 20 – 40 %. (Non-heme 2 - 4 %) Heme iron is very well tolerated. There are no known unpleasant side-effects. Uptake or tolerance will not change over time.