Iron Absorption From Encapsulated Iron Sulphate in Microspheres

Inclusion Criteria: * Female, 18 to 40 years old * Marginal iron status (PF \<25 ng/ml) * Body weight \< 65 kg * Normal body Mass Index (18.5 - 25 kg/m2) * Signed informed consent Exclusion Criteria: * Pregnancy (assessed by a pregnancy test) / intention to become pregnant * Lactating up to 6 weeks before study initiation * Moderate or severe anaemia (Hb \< 9.0 g/dL) * Elevated C reactive Protein (CRP) (\> 5.0 mg/L) * Any metabolic, gastrointestinal kidney or chronic disease such as diabetes, hepatitis, hypertension, cancer or cardiovascular diseases (according to the participants own statement) * Continuous/long-term use of medication during the whole study (except for contraceptives) * Consumption of mineral and vitamin supplements within 2 weeks prior to 1st meal administration * Blood transfusion, blood donation or significant blood loss (accident, surgery) over the past 4 months * Earlier participation in a study using Fe stable isotopes or participation in any clinical study within the last 30 days * Participant who cannot be expected to comply with study protocol (e.g. not available on certain study appointments or difficulties with blood sampling)