Hyperthyroidism in Cats
Treatment Costs UK 2026
Feline hyperthyroidism is the most common hormonal disorder in cats over 10 years old, caused by a benign tumour of the thyroid gland producing excessive thyroid hormone. It accelerates the metabolism, causing weight loss despite increased appetite. Radioactive iodine therapy offers a permanent cure.
What You'll Pay
Estimated costs for diagnosing, treating, and managing Hyperthyroidism in Cats in the UK. Prices vary by vet practice, location, and severity.
| Cost Category | Low | Average | High |
|---|---|---|---|
| Diagnosis Initial tests and consultation | £100 | £200 | £350 |
| Initial Treatment First-line treatment or surgery | £150 | £1,000 | £2,000 |
| Monthly Ongoing Medication, monitoring, management | £30 | £60 | £120 |
| Annual Cost Total estimated cost per year | £500 | £1,000 | £2,000 |
| Lifetime Cost Total estimated cost over pet's life | £1,000 | £3,000 | £7,000 |
Diagnosis
Initial tests and consultation
Initial Treatment
First-line treatment or surgery
Monthly Ongoing
Medication, monitoring, management
Annual Cost
Total estimated cost per year
Lifetime Cost
Total estimated cost over pet's life
Prices are estimates based on UK averages and may vary by region, practice, and individual case. Updated March 2026.
Symptoms to Watch For
If your pet shows any of these symptoms, consult your vet promptly. Early diagnosis can reduce treatment costs and improve outcomes.
Weight loss despite increased appetite
Hyperactivity or restlessness
Increased thirst and urination
Vomiting and diarrhoea
Rapid heart rate
Unkempt or matted coat
What Treatment Includes
A typical treatment plan for Hyperthyroidism in Cats includes these components. Your vet will tailor the approach to your pet's specific needs.
Blood test (total T4 and free T4)
Radioactive iodine therapy (curative)
Daily oral medication (methimazole/felimazole)
Prescription thyroid diet (Hills y/d)
Regular blood monitoring every 3-6 months
Blood pressure and kidney function checks
Common Medications
These medications are commonly prescribed for Hyperthyroidism in Cats. Compare prices across UK online retailers to save on your pet's treatment.
Commonly Affected Breeds
These breeds are more predisposed to Hyperthyroidism in Cats. If you own one of these breeds, consider discussing screening with your vet.
Pet Insurance Can Help
Hyperthyroidism in Cats is typically covered by comprehensive pet insurance policies, provided it isn't a pre-existing condition. With lifetime treatment costs of £1,000–£7,000, insurance can save you thousands. Lifetime policies are recommended for chronic conditions like this.
Compare pet insuranceCompare Vets Near You
Treatment costs vary significantly between vet practices. Enter your postcode to compare local vets and find the best value for your pet's care.
Other Conditions
Compare treatment costs with other common pet health conditions.
Recommended by VetCost
Retailers we earn a commission from. It costs you nothing and never changes what we show.
Bella & Duke Wellness Supplements
Natural supplements and bone broths for gut health, calming, itchy skin and ear care. Made with chamomile, milk thistle, spirulina and other whole-food ingredients.
Calming Supplements for Dogs
Natural calming supplements for anxious dogs. Helps with fireworks, separation anxiety and travel.
YuMOVE Calming Care for Dogs
Natural calming supplement for anxious dogs. Helps with fireworks, separation anxiety, travel and vet visits.
We may earn a small commission if you purchase through these links, at no extra cost to you.