Coadministration of ferric carboxymaltose and denosumab may cause hypocalcaemia and hypophosphataemia; however, this interaction is not well-described in the literature and has typically been described in patients with chronic kidney disease (CKD). We present a case of this interaction in a patient without preexisting CKD. We suggest the use of alternative iron preparations and an interval of at least 4 weeks between administrations.
Keywords: denosumab; ferric carboxymaltose; hypocalcaemia; hypophosphataemia; osteoporosis.
© 2023 The Authors. Internal Medicine Journal published by John Wiley & Sons Australia, Ltd on behalf of Royal Australasian College of Physicians.