What is a Generic Drug?

A generic drug is a copy of the brand-name drug with the same dosage, safety, strength, quality, consumption method, performance, and intended use. Before generics become available on the market, the generic company must prove it has the same active ingredients as the brand-name drug and works in the same way and in the same amount of time in the body.

The only differences between generics and their brand-name counterparts is that generics are less expensive and may look slightly different (eg. different shape or color), as trademarks laws prevent a generic from looking exactly like the brand-name drug.

Generics are less expensive because generic manufacturers don't have to invest large sums of money to develop a drug. When the brand-name patent expires, generic companies can manufacture a copy of the brand-name and sell it at a substantial discount.

Felimazole (Methimazole)


Felimazole (Methimazole)

Prescription Required

2.5mg For Cats

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  • Product Details


    Felimazole is a prescription medication used to treat hyperthyroidism in cats, and it works by inhibiting the synthesis of thyroid hormone so T3 and T4 hormone are not secreted as much by the gland. This is necessary to eliminate the risk of poor cardiovascular health for cats with untreated hyperthyroidism as well as relief of increased thirst, frequent urination, or any of the other cat hyperthyroidism symptoms that may result. Most pet owners can expect to see improvement within 3 weeks to 1 month of starting on Felimazole for cats, and this medication is the standard for cat hyperthyroidism.

    You can buy Felimazole with a prescription, and your best price on it will be when you order pet medication online from Canada Pharmacy.


    Standard starting dosage for Felimazole is 2.5mg given orally every 12 hours. After 3 weeks of treatment and based on vet's evaluation your pet's dose may be titrated based on T4 hormone concentrations.

    Do not break or crush tablets


    The active ingredient in Felimazole is Methimazole


    Cats with a history of liver disease or renal failure may not be eligible to use Felimazole

    Methimazole is not for use with cats that have autoimmune disease

    Inform your veterinarian of your cat having any history of diabetes before starting on Felimazole


    Negative drug interactions between Felimazole and other pet Rx medications are possible, including other similar drugs containing carbimazole. It is best to tell your veterinarian of all medications your cat is currently taking before getting a prescription and proceeding to buy Felimazole online.

    Side Effects

    Felimazole side effects are a possibility, and some cats may experience appetite loss, vomiting, or lethargy. In rare cases jaundice may occur. If Felimazole side effects are seen you may want to discontinue use and speak to your vet again regarding cat hyperthyroid treatment options.

    IMPORTANT NOTE: The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.

    Product Code : 13671

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