Why Oral Iron Fails in Many Patients
Oral iron (ferrous sulphate, ferrous fumarate, ferric bisglycinate) is effective for mild-to-moderate deficiency in patients with a healthy gut. It fails when: the patient has inflammatory bowel disease (Crohn's, ulcerative colitis) which impairs absorption; there is coeliac disease with untreated villous atrophy; iron loss is ongoing faster than oral supplementation can replenish (heavy menstrual bleeding, chronic GI bleeding); the patient cannot tolerate the GI side effects (nausea, constipation, dark stools); pre-operative patients need rapid iron repletion before surgery; or haemoglobin is critically low and a rapid response is needed before considering transfusion.
Iron Sucrose vs. Ferric Carboxymaltose — Which Will You Get?
Iron Sucrose (Cosmofer, Ferrocyte) is dosed in 100–200mg increments, given over 30–60 minutes per infusion, requiring multiple sessions. It has a well-established safety profile with low anaphylaxis risk. Ferric Carboxymaltose (Injectafer, Jectofer FCM) can deliver up to 1000mg in a single 15-minute infusion — a significant advantage for patients with very low ferritin. It has a higher cost but fewer total visits needed. Your haematologist or gynaecologist will prescribe the formulation and dosing schedule based on your weight, ferritin level, and target haemoglobin.
Safety of Iron Infusion at Home — What to Expect
All iron infusions carry a small risk of hypersensitivity reaction, typically in the first 10–15 minutes of infusion. immidit nurses are trained to start the infusion slowly, observe for flushing, chest tightness, or urticaria, and stop immediately if any reaction occurs. The nurse carries emergency antihistamines and adrenaline. Post-infusion, common side effects include headache, nausea, and temporary joint aches — these resolve within 24–48 hours. A small number of patients experience a transient phosphate dip (Ferric Carboxymaltose); your doctor may request a phosphate check 2 weeks post-infusion.