Active ingredient: Each mL contains 100mg of methimazole.

Manufacturer: Bayer Animal Health

Prescription Medicine:

This is a prescription medicine, it is only available only under an approved veterinary authorisation. Please ensure that you have read the  "Order Prescription Medication" page before ordering this item.

All prescription medicines on the Your Pet PA website are purchased through veterinary wholesalers the same as those used by your Vet. All our products are ACVM or NZULM listed and identical to those used by your Veterinary Surgeon. Please call or email us if you have any queries about any of the products on our site.

* Prescription Animal Remedy (PAR) Class 1. For use under the authority or prescription of a veterinarian. Registered pursuant to the ACVM Act 1997.

Commonly asked questions about Methimazole SpotOn:

What is the Methimazole SpotOn?
Methimazole is a prescription medication used to treat overactive thyroid glands in cats. While Methimazole can’t stop the condition, it will help your cat feel better and improve their quality of life. The active ingredient is methimazole, which reduces the amount of the thyroid hormone your cat’s thyroid gland produces. The medication used in the transdermal gel is the same as the tablets manufactured commercially but the difference is the delivery of the medication. Transdermal means across the skin. The SpotOn is applied to the skin of your cat and is absorbed through the skin to the bloodstream.

Why do cats use Methimazole?
Cats may be prescribed Methimazole to treat overactive thyroid. Hyperthyroidism, or overactive thyroid, in cats causes weight loss, increased appetite, excessive thirst, hair loss, and more. 

What else should I know about Methimazole?
Manages symptoms of hyperthyroidism in cats. Methimazole has a bitter taste. The SpotOn allows easy dosing for cats that will not take oral Methimazole.

What problems could my or cat have with Methimazole?
Common side effects include vomiting, decreased appetite, and lethargy. Most side effects occur in the first 3 months of giving Methimazole and may be lessened by gradually increasing the dose. Always follow your veterinarian's directions.

How do you use Methimazole?
Protective finger cots or examination gloves should be worn when applying this medication. Apply as per your veterinarians instructions. Pregnant women, women who may become pregnant, nursing mothers, and people with low thyroid levels should not handle Methimazole.

What is in Methimazole?
Methimazole is an anti-thyroid agent that reduces the level of thyroid hormones in the body.