“…33 Several studies have indicated that intravenous iron acts faster and DOI:10.1002/MSJ more effectively and is better tolerated compared with oral iron in various populations. 34,35 Intravenous iron preparations are available with various formulations (ie, iron dextran, iron sucrose, iron gluconate, and recently approved ferumoxytol), each with specific characteristics to treat iron-deficiency anemia. 36 Given the concerns associated with ESAs, the role of intravenous iron has become even more important as the primary therapy for anemia, and as an adjuvant to ESA therapy, to improve efficiency and decrease the ESA dose.…”