A tentative algorithm for iron replacement therapy in patients with inflammatory bowel disease and anemia (could be applied to any digestive anemia). CRP, C-reactive protein; ESAs, erythropoiesis-stimulating agents; FCM, ferric carboxymaltose; Hb, haemoglobin; IV, intravenous; LMWID, low molecular weight iron dextran; TID, three times daily. Courtesy of Professor Manuel Muñoz.