Treatment of Iron Deficiency in the Elderly: A New Paradigm.

Although gene sequencing has elucidated several mutations associated with mild cytopenias in older individuals, iron deficiency remains the most common cause of anemia. Oral iron has remained the frontline standard despite evidence that it is poorly tolerated, often ineffective, and frequently harmful. Studies of different formulations of intravenous iron have shown it effective, with marginal to no toxicity. Serious adverse events have not been described and the failure to address its administration in iron-deficient elderly patients is an unmet clinical need. This article outlines situations in which oral iron should be proscribed and offers an approach to administration of available formulations.