[The effect of ferric citrate hydrate as an iron replacement therapy in Japanese patients with iron deficiency anemia].

Patients with iron deficiency anemia (IDA) need to take oral iron preparations, which serve as the first-line treatment in IDA, for several months in order to replenish body iron stores after the improvement of anemia. However, existing oral iron preparations have concerns regarding its long-term use due to side effects, such as gastrointestinal symptoms. Previous clinical studies have shown that ferric citrate hydrate (FC) exhibits sufficient therapeutic efficacy in patients with IDA and lowers the risks of nausea and vomiting in comparison with existing oral iron preparations. In this study, we evaluated the efficacy and safety of FC administration at doses of 500 and 1,000 mg/day for up to 24 weeks as iron replacement therapy in patients with IDA. The results of this study showed that both the doses of FC improved anemia and iron-deficiency conditions and led to sufficient iron replacement response in most patients with IDA. No safety concerns were identified. Therefore, FC is expected to be a novel oral iron preparation for patients with IDA.