 The efficacy and safety of FERINJECT were investigated in a prospective, randomised, controlled study conducted in IBD patients. According to the results of this study, FERINJECT provides a faster Hb response, a higher increase in iron storage and a better patient tolerance compared to oral preparations. In this study, the iron amount required was calculated according to the Ganzoni formula, where 500 mg is the amount of storage iron. To simplify the treatment and to make the treatment more effective, a new standardised dosage regimen was created. The current study is designed to assess whether this new standardised dosage regimen of i.v. FERINJECT is as safe and effective as the currently used individually calculated dosage regimen. 