Methimazole (Generic) Rx
Starting At $0.11 per tablet

Methimazole (Generic) Rx


$0.11 per tablet
5mg Tablet
  • Usually ships within one business day with veterinary approval.

  • Requires veterinary authorization.

  • Your pet's veterinarian will provide directions for use.

What are Methimazole Tablets for Cats?

  • 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 her quality of life.
  • The active ingredient in each small, coated Felimazile table is methimazole, which reduces the amount of the thyroid hormone your cat’s thyroid gland produces.

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. 
  • While there is no permanent treatment for cats with hyperthyroidism, your veterinarian can help your cat feel better by regulating the thyroid with prescription Methimazole.

What else should I know about 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?

  • Wear gloves when handling Methimazole.
  • 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 antithyroid agent that reduces the level of thyroid hormones in the body.

Will I get what I see in the picture?

  • Methimazole is sold as an FDA approved generic drug. Brand may vary from order to order and variation to variation. We are unable to guarantee which brand will be available at the time of order shipment.

Is it important for my cat to finish all of the Methimazole?

  • Dogs and cats may use Methimazole for different lengths of time. Please consult your veterinarian if you have any questions.