Felanorm®
(methimazole) Oral Solution 5 mg/mL
The easy-to-give solution for treating feline hyperthyroidism
No pill. No gel. No worries! Felanorm® (methimazole) Oral Solution 5 mg/mL for cats is an FDA-approved, easy-to-administer treatment for feline hyperthyroidism.
Target Species: Cats
A small pill to you can be a big deal to her.
Make twice-daily pills a thing of the past with the new easy-to-give form of methimazole for cats.
Ask your vet about Felanorm
Easy to Give. Easy to Trust.
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The first FDA-approved oral solution for feline hyperthyroidism
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Syringe marked in 0.25 mg increments for accurate dose titration
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Proven track record (over 100 million doses sold in the U.K.)1
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Easy-To-Give (International Society of Feline Medicine awarded)2
REFERENCES:
1 Kynetec Sales Data, U.K. (based on standard 2.5 mg dose).
2 International Society of Feline Medicine Easy-To-Give award 2017 (NOTE: Thyronorm® is the U.K. brand name for Felanorm; both share the exact same formulation).
IMPORTANT SAFETY INFORMATION:
CAUTION: As with all drugs, side effects may occur. The most commonly reported side effects are anorexia, vomiting, head/facial pruritus or edema, depression/lethargy, weight loss, anemia, elevated liver enzymes, skin lesions, elevated BUN, diarrhea, and thrombocytopenia. Felanorm® Oral Solution is not for use in pregnant or lactating queens, or cats with renal, hepactic, or hematological disorders. In some reported cases, the patients recovered after adverse signs were recognized, the drug was withdrawn, and veterinary care was applied. In some cases, death (or euthanasia) has been reported as an outcome of the adverse reactions listed above. Methimazole has anti-vitamin K activity and may induce bleeding diathesis without evidence of thrombocytopenia. Refer to the prescribing information for complete details.
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Active Ingredient(s)
Methimazole is a thioureylene antithyroid drug, which inhibits the synthesis of thyroid hormones. Methimazole (1-methylimidazole-2-thiol) is a white crystalline substance that is freely soluble in water. The chemical formula is C4H6N2S. Molecular weight is 114.16.
- Dosage Form and Description
- Indications
- Dosage and Administration
- Storage
How to Give Felanorm®
Here's a quick guide on how to safely administer Felanorm (methimazole) Oral Solution.
© 2025 Norbrook Laboratories Limited. The Norbrook logo, Felanorm and Thyronorm are registered trademarks of Norbrook Laboratories Limited. 771-25-099
US Patent Numbers: 10,045,967, US 11,123,317 and US 11,738,005
Talk to your vet about Felanorm®
Find out if Felanorm is right for your cat.
