Methimazole for cats
Treats hyperthyroidism (an overactive thyroid) in cats. [1]
Key facts
| Generic name | Methimazole |
|---|---|
| Common brand names | Felimazole, Tapazole, Felanorm |
| Used in | Cats |
| Type | Thyroid & hormones |
| Prescription? | Prescription |
| Typical US price | Not listed (no reliable public source) |
What it's used for
Treats hyperthyroidism (an overactive thyroid) in cats. [1]
How it works
It blocks the thyroid gland from making too much hormone. [1]
Side effects and cautions
Common side effects: Vomiting, low appetite and tiredness, usually in the first three months. Facial itching and blood changes are less common. [1]
Use with care: Your vet will check bloodwork, including kidney values, after starting. Not for pregnant or nursing cats. [1]
Call your vet right away if your pet has trouble breathing, facial swelling, hives, collapse, or any side effect that is severe or getting worse.
What it costs
We don't list a price for this one because we couldn't find a reliable public source. Ask your vet or pharmacy for a quote; prices depend on your pet's size, the dose and where you fill it.
Methimazole FAQ
What is Methimazole used for in cats?
Treats hyperthyroidism (an overactive thyroid) in cats.
What are the side effects of Methimazole?
Vomiting, low appetite and tiredness, usually in the first three months. Facial itching and blood changes are less common.
Does Methimazole need a prescription?
Yes. It needs a prescription from a veterinarian.
How much Methimazole should I give my pet?
Only your veterinarian can tell you. The right dose depends on your pet's weight, health and other medicines, so we don't list doses. Never give a pet a medicine prescribed for a person or another animal without asking your vet.
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This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.