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Iron chelation after repeated transfusions: a plain guide | CION Cancer Clinics
Iron chelation is a medicine that removes the extra iron that builds up after many red cell transfusions. The body cannot clear this iron on its own, and over years it harms the heart, liver and hormone glands. Deferasirox, deferiprone and desferrioxamine are the three medicines in common use. This page explains who needs them, how iron is measured, which side effects need urgent care, and what to ask your haematologist. At CION Cancer Clinics, our haematology team supports patients and families through treatment, cost questions and life at home.
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Medically reviewed by Dr. Basudev PokhrelConsultant Haematologist · last reviewed September 2026, next review due September 2027
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On this page
- Why does repeated transfusion need iron chelation?
- Which chelation medicines are used, and how do they differ?
- How does the team measure how much iron has built up?
- What do the words on the iron report mean?
- What do families often believe about iron chelation?
- What should you ask, and what can this page not tell you?
- Common questions about iron chelation
The short answer
Why does repeated transfusion need iron chelation?
Every bag of red cells brings iron into your body, and the body has no natural way to get rid of it. After many transfusions the extra iron builds up in the liver, heart and hormone glands. Iron chelation means taking a medicine that binds this spare iron so it leaves the body in urine or stool.
Who usually needs it
It is most often needed by people who depend on regular red cell transfusions over months or years. That includes children and adults with thalassaemia major, some people with sickle cell disease, and adults with myelodysplastic syndrome (MDS) or bone marrow failure. It is also considered after a stem cell transplant, if iron built up during the months of treatment before it.
Who it may not suit
Someone who has had only a few transfusions, for example during one course of chemotherapy, usually does not need it. Chelation is also used with extra care, or not at all, when the kidneys or liver are not working well, or when blood counts are very low. Your haematologist weighs the harm from the iron against the side effects of the medicine.
Chelation does not treat the condition that needs the transfusions. It protects the organs while that condition is managed.The medicines
Which chelation medicines are used, and how do they differ?
Three medicines are in common use. The dose and schedule are set by your treating team and adjusted against your test results.
Deferasirox
A tablet taken once a day, either dissolved in water or swallowed, depending on the form. It is widely used because it is convenient.
Your team watches
- Kidney and liver blood tests
- Stomach upset and loose motions
- Skin rash
Deferiprone
Tablets or syrup taken during the day. It may be chosen when iron has built up in the heart. It can sometimes cause a sudden, severe drop in white cells, so regular blood counts are needed.
Your team watches
- White cell count
- Joint pain and feeling sick
Desferrioxamine
The oldest of the three. It is given as a slow injection under the skin with a small pump, usually overnight on several nights a week, or through a drip in hospital when iron levels are very high.
Hearing and eyesight checks are part of long-term use.Combinations
When iron in the heart or liver is high and one medicine is not enough, two may be used together for a time. This is a specialist decision and needs closer monitoring.
Not sure whether this applies to you?
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One thing that cannot wait
If you or your child are taking deferiprone and develop a fever, a sore throat or mouth ulcers, go to the nearest emergency department or call 108 the same day. Say which medicine you are on. A blood count is needed urgently, because the white cells may have dropped. Do not decide on your own whether to keep taking the medicine; the doctor who sees you will tell you.
Tracking the iron
How does the team measure how much iron has built up?
Counting transfusions
A simple record of how many units you have had gives the first clue. Bring your transfusion card or blood bank slips to every visit.
Ferritin blood test
Ferritin reflects the body's iron store. It is repeated regularly to see the trend. Infection and inflammation can push it up, so one high result is read alongside the others.
Liver and heart MRI
A special MRI measures iron in the liver and heart directly, without a needle. It is not available at every centre, so your team may refer you to one that offers it.
Safety blood tests
Kidney, liver and blood counts are checked while you take the medicine, so the dose can be adjusted before a side effect becomes serious.
On your report
What do the words on the iron report mean?
- Serum ferritin
- A protein that stores iron. A rising trend usually means iron is building up. Reference ranges differ between laboratories.
- Transferrin saturation
- How full the iron-carrying protein in your blood is. High values suggest iron is spilling over into organs.
- Liver iron concentration (LIC)
- The amount of iron in the liver, usually measured by MRI. It gives the most reliable picture of total body iron.
- Cardiac T2*
- An MRI reading of iron in the heart muscle. A lower value means more iron in the heart.
- Chelator
- A medicine that grabs iron so the body can pass it out.
- Creatinine
- A kidney blood test. Changes can mean the chelation dose needs review.
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Commonly believed
What do families often believe about iron chelation?
"She feels fine, so the iron cannot be doing any harm."
Iron damage builds silently for years. By the time the heart, liver or hormone glands show symptoms, the harm is already advanced. That is why the tests continue even when a person feels well.
"Avoiding iron-rich food will fix the overload."
The iron from transfusions is far more than any diet adds. Food changes alone cannot clear it. Ask your team before taking any iron tonic or supplement, which is usually not advised with overload.
"Missing a few days of the tablet does not matter."
Chelation works by steady daily use. Gaps let iron build up again. If side effects make it hard to take, tell your haematologist rather than skipping it, because the dose or medicine can often be changed.
"Once ferritin comes down, chelation can end for good."
As long as regular transfusions continue, iron keeps coming in. The dose may be lowered or paused by your team when levels are low, and restarted when they rise again.
Being straight with you
What should you ask, and what can this page not tell you?
This page cannot tell you whether you need chelation, which medicine suits you, or what dose to take. Those depend on your transfusion history, your iron tests, your kidney and liver function, your age and your underlying condition. Only your haematologist can put those together.
Questions worth asking
Ask how much iron has built up, and which organ is most affected. Ask how often ferritin and MRI checks will be done, and which side effects should make you call. Ask whether the plan changes if a transplant is being considered. At CION, Dr. Basudev Pokhrel and the haematology team review the case and coordinate MRI and other access with qualified centres where needed.
Cost and support
Chelation is usually long term, so the cost adds up. Aarogyasri, CGHS, ECHS, EHS, PM-JAY and cashless insurance may cover parts of treatment, and some state thalassaemia and sickle cell programmes support medicines. Scheme rules change, so check the current rules before you plan.
Never stop, start or change a chelation medicine on your own. Call your team first.Questions we are asked
Common questions about iron chelation
What happens if iron overload is not treated?
Extra iron slowly damages organs. In the heart it can cause an irregular heartbeat and heart failure. In the liver it can lead to scarring. It can also affect the glands that control growth, puberty, blood sugar and thyroid function. Treating it early lowers the chance of this damage.
Does chelation make you feel unwell?
Some people notice nothing. Others have stomach upset, loose motions, a rash or joint aches, especially in the first weeks. Many of these ease with time or with a change in how the medicine is taken. Tell your team about any side effect instead of quietly stopping the tablets.
Why is urine sometimes a reddish-brown colour on chelation?
With deferiprone and desferrioxamine, iron leaving the body can colour the urine reddish-brown. This is expected and usually harmless. Still, mention it at your next visit, and seek help quickly if you also have back pain, fever or feel very unwell, since those need checking.
Can children take chelation medicines?
Yes. Children with thalassaemia major are among the most common users. Growth, hearing, eyesight and development are watched closely along with the usual blood tests. The medicine and dose are chosen for the child's age and weight by the paediatric haematology team.
Is ferritin alone enough to decide on chelation?
Usually not on its own. Ferritin rises with infection, inflammation and liver problems as well as iron. Doctors look at the trend over repeat tests, the number of transfusions and, where possible, an MRI of the liver and heart. Reference ranges also differ between laboratories.
Can I take chelation during chemotherapy?
It depends on your counts, kidneys and liver, and on the treatment you are having. Some teams pause chelation during intensive chemotherapy and restart it later. This is a decision for your haematologist, so do not start or stop it around a cycle on your own.
Does chelation interact with other medicines?
Some combinations need care. Antacids containing aluminium, some painkillers, and vitamin C supplements can matter. Show your haematologist every medicine, tonic and herbal remedy you take, including those from other doctors, so interactions can be checked.
Will iron come down after a stem cell transplant?
If the transplant works and transfusions stop, no new iron comes in, but stored iron stays. It may be removed with chelation or by taking blood off in small amounts, called venesection, once counts allow. The transplant centre and your haematologist plan this together.
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Dr. Basudev Pokhrel reviews blood counts, transfusion needs and blood disorders, and works with the CION tumour board on blood cancers.
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Sources
- NHS — Thalassaemia: treatment
- National Heart, Lung, and Blood Institute — Thalassemia: Treatment
- American Cancer Society — Blood Transfusion and Donation
- American Society of Hematology — Blood disorders: patient information
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Red Cell Transfusion ThresholdsWhen red cell transfusions are given in the first placeTransfusion Reactions: What They Feel LikeThe other side effect of regular transfusions to know aboutArranging Blood and Platelet DonorsHow families can help with regular transfusion needsCounts, Fever and Infection in HaematologyThe full guide to counts and infection
Talk to us
Worried about iron building up after transfusions?
Share your transfusion history and recent ferritin reports. Our haematology team will review them and explain the options. One helpline serves every CION centre.