Graves' disease treatment (Management of Graves' disease (autoimmune hyperthyroidism))
Treatment to control an overactive thyroid caused by Graves' disease, using medicines, radioactive iodine or surgery.
✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review
In short
- Graves' disease is an immune condition that makes the thyroid overactive; treatment controls the hormone levels rather than curing the immune cause.
- There are three main options, medicines, radioactive iodine and surgery, each with different trade-offs around remission, permanence and needing lifelong thyroid tablets.
- Anti-thyroid medicines can rarely drop your white blood cells, so a sore throat, mouth ulcers or fever needs an urgent blood test and stopping the drug.
- Eye disease (thyroid eye disease) can occur and may need separate specialist care; smoking and radioiodine can make it worse.
A plain-English summary. The detail — including risks and recovery — is below.
At a glance
A general guide. Your specialist will give you advice for your situation.
Brings overactive thyroid levels back toward normal and relieves symptoms such as palpitations, tremor and weight loss
Radioiodine is not suitable in pregnancy or breastfeeding, and is used cautiously where there is active thyroid eye disease.
Symptoms such as tremor and palpitations often ease, helped by a beta-blocker. Thyroid levels begin to fall, with blood tests guiding dose changes.
A named endocrine contact and a clear, written plan including the anti-thyroid drug warning signs and where to get urgent bloods.
Symptoms such as tremor and palpitations often ease, helped by a beta-blocker. Thyroid levels begin to fall, with...
Levels are kept in range and the dose adjusted. A course usually lasts 12 to 18 months before a trial of stopping.
You follow radiation-safety advice for a set period. Thyroid activity falls over weeks to months, and you are...
A short hospital stay; your calcium and voice are checked. Thyroid hormone replacement is started. The neck wound...
What is treatment for Graves' disease?
Graves' disease is the most common cause of an overactive thyroid (hyperthyroidism). The immune system makes antibodies that switch the thyroid on, so it makes too much thyroid hormone. This can cause weight loss, a fast or irregular heartbeat, tremor, anxiety, heat intolerance and, in some people, eye problems.
Treatment has three main routes: anti-thyroid medicines (usually carbimazole), radioactive iodine, and surgery to remove the thyroid. The first aim is to bring hormone levels back to normal and relieve symptoms, often with a beta-blocker added early to settle the heart and tremor.
There is no single best option for everyone. Medicines may lead to lasting remission in some people but the condition often comes back; radioiodine and surgery are more definitive but usually leave you needing lifelong thyroid hormone replacement. Treatment does not cure the underlying immune condition, and it does not always control the separate eye disease.
Graves' eye disease is treated alongside, sometimes by a different specialist, and can behave independently of the thyroid levels.
Types, options & approaches
There may be different ways to do this. The right approach depends on the clinical question and your circumstances.
Comparing the main treatment routes
| Option | How definitive | Need for thyroid tablets after |
|---|---|---|
| Anti-thyroid medicines | Can give remission, but often relapses | Usually not, unless it later fails |
| Radioactive iodine | Usually definitive over months | Most people need them long term |
| Surgery | Definitive and quick | Lifelong replacement needed |
Choice depends on your levels, goitre size, eye disease, pregnancy plans, other illnesses and your own preferences. Discuss all three with an endocrinologist.
Preparing for your treatment
- Have blood tests to confirm the diagnosis and check thyroid levels and antibodies before deciding on treatment.
- Tell the specialist if you are pregnant, planning pregnancy or breastfeeding, as this strongly affects which option is suitable.
- Mention any eye symptoms and whether you smoke, as smoking and radioiodine can worsen thyroid eye disease.
- If starting an anti-thyroid medicine, make sure you understand the urgent warning signs (sore throat, fever, mouth ulcers) and have a blood-test plan.
- If considering radioiodine, ask about the safety precautions afterwards, including contact with children and pregnant people, and pregnancy avoidance.
- If considering surgery, expect checks of your voice and calcium, and a plan for thyroid hormone replacement afterwards.
- List all your medicines and supplements, including any containing iodine.
What happens
After blood tests confirm an overactive thyroid and point to Graves' disease, an endocrinologist discusses the three routes with you and usually starts an anti-thyroid medicine, often with a beta-blocker to settle symptoms quickly.
If you take medicines, your levels are rechecked over the following weeks and the dose adjusted. A course usually runs 12 to 18 months, after which the drug may be stopped to see if remission holds.
If you choose radioactive iodine, you take a single capsule or drink in a hospital department and follow radiation-safety advice for a set period. Your thyroid activity falls over weeks to months, and you are monitored so that replacement tablets can be started when you become underactive.
If you choose surgery, most or all of the thyroid is removed under general anaesthetic, usually as a short stay. Your calcium and voice are checked afterwards, and lifelong thyroid hormone replacement is started.
Is this treatment right for me?
A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.
May not be suitable if…
- Radioiodine is not suitable in pregnancy or breastfeeding, and is used cautiously where there is active thyroid eye disease.
- Carbimazole is generally avoided in early pregnancy because of a risk of birth defects; propylthiouracil is usually used instead at that time.
- Surgery may be less suitable if you are a high anaesthetic risk, unless control cannot be achieved another way.
- No option treats the underlying immune condition, so none should be presented as a cure for Graves' disease itself.
Delay or rearrange if…
- There is any chance of pregnancy before radioiodine, or you cannot follow the safety precautions.
- You have not had the warning signs and a blood-test plan explained before starting anti-thyroid drugs.
- Active, worsening eye disease needs assessing before radioiodine is given.
- Thyroid levels are very high and unstable, where symptoms should be controlled first before definitive treatment.
Alternatives to discuss
- Anti-thyroid medicines as an alternative to definitive treatment, accepting a relapse risk.
- Radioactive iodine as an alternative to surgery for definitive control.
- Surgery as an alternative to radioiodine, especially with a large goitre or active eye disease.
- A beta-blocker for symptom relief while the choice is made.
Before you decide
Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.
What matters most to me?
Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.
What are all my options?
Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.
What would make me pause?
Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.
What happens if I do nothing today?
For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.
Comfort, sedation or contrast choices
If local anaesthetic, sedation, contrast or pain relief is used, ask what is planned, why, and what it means afterwards.
Benefits
- Brings overactive thyroid levels back toward normal and relieves symptoms such as palpitations, tremor and weight loss
- Beta-blockers can ease heart and anxiety symptoms quickly while other treatment works
- Radioiodine and surgery offer more definitive, longer-term control for many people
- Reduces the longer-term heart and bone risks of an untreated overactive thyroid
- Lets you choose an approach that fits your circumstances, including pregnancy plans
Risks & complications
- Needing repeated blood tests and dose changes to get levels right
- Side effects of anti-thyroid medicines such as rash, itch, joint aches or upset stomach
- Becoming underactive (low thyroid) after radioiodine or surgery, needing lifelong tablets
- Temporary worsening or new eye symptoms, particularly after radioiodine or in smokers
- Relapse of the overactive thyroid after a course of medicines
- After surgery, temporary low calcium causing tingling, or a hoarse voice
- Need for more than one treatment route over time
- A sudden drop in white blood cells (agranulocytosis) on anti-thyroid drugs, which can cause serious infection
- Liver injury with anti-thyroid drugs, more associated with propylthiouracil
- After surgery, permanent low calcium or permanent voice change from nerve injury
- A thyroid 'storm', a rare but dangerous surge in thyroid activity
The most important medicine risk is a sudden fall in infection-fighting white cells (agranulocytosis): a sore throat, mouth ulcers or fever means stop the drug and get an urgent blood test. With radioiodine, the main issues are becoming underactive and the chance of worsening eye disease, especially if you smoke. With surgery, ask specifically about the risk to your voice and calcium glands. Tell your specialist if there is any chance of pregnancy.
Published figures to discuss
Outcomes vary with the treatment chosen, how high your levels are, goitre size and your general health. Some risks have reasonably consistent published ranges; others are reported inconsistently, so we give cautious figures only where the evidence supports them and use qualitative wording otherwise. We never quote a precise rate the evidence cannot support.
| Figure | Reported range | How to interpret it | Source / confidence |
|---|---|---|---|
| Agranulocytosis (sudden drop in white cells) on anti-thyroid drugs | Roughly 0.2-0.6% in published series | Rare but potentially serious; usually in the first few months. A sore throat, ulcers or fever needs an urgent neutrophil count and stopping the drug. | MHRA Drug Safety Update - carbimazole risksgov.ukPublished figure |
| Relapse after a course of anti-thyroid drugs | Commonly reported around half of patients, often within the first year | Varies widely with antibody levels, goitre size and smoking; many people eventually choose radioiodine or surgery. | Guide sourcesClinical context |
| Becoming underactive after radioiodine | Common; the majority eventually need thyroid hormone replacement | Often expected and planned for, with monitoring so tablets can be started promptly. | Guide sourcesClinical context |
These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.
What happens afterwards
Here, recovery means how your thyroid levels respond and what monitoring continues, except after surgery, which also has a physical recovery. Levels usually start to settle within weeks on medicines, while radioiodine works over months.
- Symptoms easing gradually rather than overnight as levels come down
- Several dose adjustments and blood tests before levels are stable
- Becoming underactive after radioiodine or surgery and needing thyroid tablets
- After surgery, a healing neck wound and sometimes a temporarily weak or hoarse voice
Aftercare
- Take anti-thyroid medicines exactly as prescribed and never ignore a sore throat, fever or mouth ulcers, stop and get an urgent blood test.
- Attend all blood tests so your dose can be adjusted and levels kept in range.
- If you have had radioiodine, follow the radiation-safety and pregnancy-avoidance advice you are given.
- If you take thyroid hormone replacement, take it daily and have levels checked as advised.
- Report any new or worsening eye symptoms promptly, and stop smoking, which worsens eye disease.
- After surgery, watch for tingling around the mouth or fingers (low calcium) and take calcium or vitamin D if prescribed.
- Tell any clinician you see, and your pharmacist, which treatment you are on.
- Written warning-sign card for anti-thyroid drugs (sore throat, fever, ulcers)
- A blood-test plan and where to have urgent bloods done
- Radiation-safety instructions, if having radioiodine
- A plan for thyroid hormone replacement and monitoring, if relevant
- Eye-symptom advice and smoking-cessation support if needed
- Contact number for the endocrine team
- Up-to-date medicines list including anything iodine-containing
Scars and how they heal
Anti-thyroid medicines and radioactive iodine leave no scar. Thyroid surgery leaves a scar low across the front of the neck, usually placed in a skin crease so it settles into a fine line over months; sun protection helps it fade. Ask your surgeon how they place and care for the wound.
⚠ Get urgent help if…
- Sore throat, mouth ulcers, fever or feeling very unwell on an anti-thyroid drug, stop it and get an urgent blood test
- Yellowing of the skin or eyes, dark urine or severe tummy pain (possible liver problem)
- Severe palpitations, chest pain, breathlessness, high fever or confusion (possible thyroid storm), seek emergency care
- Sudden eye pain, double vision or loss of vision, contact an eye specialist urgently
- After surgery, marked tingling, muscle cramps or spasms (low calcium), or a swelling in the neck and difficulty breathing
- Severe or worsening shortness of breath or a very fast, irregular pulse
Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.
General guidance — it doesn't replace the specific advice your specialist gives you.
Results & realistic expectations
Successful treatment brings thyroid levels back into the normal range and relieves symptoms. With medicines, some people stay in remission after a course, but relapse is common; with radioiodine or surgery, control is usually long-lasting, at the cost of needing thyroid hormone tablets.
No treatment cures the underlying immune condition, and a normal thyroid level does not guarantee that eye disease will settle, as the eyes can behave independently. The aim is steady control, fewer symptoms and lower long-term heart and bone risk.
Anti-thyroid drug courses lead to lasting remission in only a proportion of people, and relapse, often in the first year after stopping, is common, so many eventually need radioiodine or surgery. Radioiodine and surgery usually give permanent control but commonly leave you underactive, needing lifelong thyroid hormone replacement and regular blood tests. Whichever route you take, you may need long-term monitoring because levels can drift.
Related tests, treatments or support
Treatment of the overactive thyroid is often combined with a beta-blocker early on for symptom relief, and with separate care for thyroid eye disease, frequently led by an ophthalmologist. If you smoke, stopping is an important part of treatment, especially to protect your eyes. Pregnancy planning is coordinated carefully because it changes which options are safe.
Follow-up & long-term care
You are monitored with blood tests, frequently at first while doses are adjusted, then at intervals once stable. After radioiodine or surgery you are watched for becoming underactive so replacement can be started, then checked regularly. Eye symptoms are reviewed and referred on if needed. Most people need long-term, sometimes lifelong, follow-up.
- Regular thyroid blood tests, lifelong if you take replacement tablets
- Daily thyroid hormone replacement if you have become underactive
- Ongoing monitoring for relapse if you were treated with medicines
- Stopping smoking and watching for eye symptoms
- Telling new clinicians and your pharmacist which treatment you are on
Repeat, follow-on and what comes next
- Many people need more than one approach over time, for example moving from medicines to radioiodine or surgery after a relapse.
- Radioiodine sometimes needs to be repeated if the first dose does not fully control the thyroid.
- After surgery or radioiodine, treatment shifts to lifelong replacement and monitoring rather than further thyroid-lowering treatment.
Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.
What good aftercare looks like
- A named endocrine contact and a clear, written plan including the anti-thyroid drug warning signs and where to get urgent bloods.
- A defined blood-test schedule to keep levels in range and to detect becoming underactive.
- A plan for thyroid hormone replacement and monitoring if relevant.
- Prompt referral and review for any eye symptoms, plus smoking-cessation support.
What affects the cost
Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:
- Whether care is NHS or includes private endocrinologist or surgeon fees
- Which treatment route is chosen: medicines, radioiodine or surgery
- Frequency of blood tests and clinic reviews while doses are adjusted
- For radioiodine, the facility and safety arrangements
- For surgery, the surgeon, anaesthetic, theatre and any short stay
- Cost of lifelong thyroid hormone replacement and monitoring if needed
- Separate care for thyroid eye disease
- Which clinician leads your care and their fee
- Which treatment is included and what monitoring comes with it
- For surgery: surgeon, anaesthetist, facility and any stay
- For radioiodine: the facility fee and follow-up
- Cost and arrangements for ongoing blood tests and replacement tablets
- What happens if the first treatment does not work or the condition relapses
- Whether eye-disease care is included or referred separately
On the NHS? Graves' disease is routinely treated by the NHS; private endocrinology may be used for speed or continuity, but radioiodine and surgery still require appropriate hospital facilities and follow-up.
You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.
Consent traps and marketing red flags
These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.
Consent traps
- Presenting any single option as a cure for the underlying immune condition.
- Not warning clearly about the agranulocytosis signs and the need for an urgent blood test.
- Failing to discuss the effect of radioiodine on thyroid eye disease, especially in smokers.
- Not explaining that radioiodine and surgery usually lead to lifelong thyroid tablets.
- Overlooking pregnancy plans, which change which options are safe.
Marketing red flags
- Claims to 'cure' Graves' disease or 'fix' the immune system with supplements or diets.
- Promising no need for lifelong tablets after radioiodine or surgery.
- Downplaying the urgent warning signs of anti-thyroid drugs.
- Selling treatment without a clear plan for long-term monitoring or eye care.
Choosing a specialist safely
- Check the specialist is on the GMC Specialist Register for this area.
- Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
- You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
- Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
- You're entitled to your total cost in writing — including any follow-up — before you decide.
Questions to ask your medical professional
Take this to your consultation. A good specialist will welcome every one of these.
- Given my levels, goitre and eye symptoms, which option do you recommend and why?
- What are the warning signs on anti-thyroid drugs, and exactly where do I get an urgent blood test?
- If I have radioiodine, what are the safety precautions and how long must I avoid pregnancy?
- If I have surgery, what is your risk of voice change and low calcium?
- How likely am I to need lifelong thyroid tablets with each option?
- How will my eye disease be monitored and treated, and by whom?
- Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
- Will you be the specialist who carries out my treatment, and who looks after me afterwards?
- What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
- What does a realistic result look like — and what can this treatment not achieve?
- What are my options, including waiting, doing nothing for now, or choosing a different approach?
- Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
- What is the total cost in writing, including any follow-ups, and how much time do I have to decide?
Frequently asked questions
Which treatment is best?
Why do I need to worry about a sore throat?
Will treatment fix my eyes?
Can I have radioiodine if I have children at home or might be pregnant?
Will I need thyroid tablets forever?
Can this be treated privately?
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How we made this page
Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →
Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.
Sources & standards: NICE NG145 - Thyroid disease: assessment and management MHRA Drug Safety Update - carbimazole risks NHS - Overactive thyroid (hyperthyroidism): treatment Society for Endocrinology - thyroid hormones Review: antithyroid drug-induced agranulocytosis - PMC
Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.
Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.
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