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May 22, 2013
Methimazole is an anti-thyroid tablet used in the treatment of hyperthyroidism in cats, which, might result in weight loss, abnormal appetite and heart problems. When administered, methimazole restores the thyroid hormone levels back to normal by interfering with iodine, which has a major role in thyroid function.
Methimazole must be used only in cats. It should never be used on animals, which are prone to allergy to the drug. Extreme care should be taken while using this medication in animals with a known history of liver impairment, immune-system disease or blood disorders. Regular blood tests to monitor toxicity on blood cells and liver are suggested in cats, which are on methimazole for a long period.The medication should be administered life long as the symptoms might reappear once the medication is stopped. It is advisable to use methimazole for the short term management of the disease as it involves side effects. Surgical removal of the thyroid gland or radiation treatment would be more appropriate for a lasting solution. Pregnant and nursing cats should not be given this drug. Drug overdose might result in blood disorders or liver toxicity.
Methimazole comes as 5 mg and 10 mg tablets. The recommended primary dose of methimazole is 5 mg per cat, three times daily and the dosage should be increased, if no improvement is noticed in the situation. Once the condition stabilizes, the dose could be reduced after taking the opinion of the veterinarian. Ensure that the full course is completed to prevent relapse or the chances of developing resistance to the drug.
Though it is generally safe when administered under the direction of a veterinarian, methimazole can cause have side effects in some animals. Adverse effects include frequent bouts of vomiting, lack of appetite, weakness, bleeding disorders, or liver problems.
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