Methimazole

NAME OF THE MOLECULE:

Methimazole

DRUG DESCRIPTION:

This product reduces the synthesis of thyroid hormones.

INDICATIONS:

It is used to treat hypothyroidism in cats.

CONTRAINDICATIONS:

Do not use, unless advised by a veterinarian, if your pet is allergic to carbimazole or polyethylene glycol, if he suffers from an auto-immune disease, liver or kidney disease , a coagulopathy or blood disorder, is gestating or nursing.

SIDE EFFECTS:

Most side effects occur during the first 3 months of treatment. The most frequently observed are vomiting, a loss of appetite, depression or a decrease in activity. The gastro-intestinal effects are usually caused by the bitter taste of the medication or by its irritating effect on the stomach. These signs are, for the most part, temporary.

It is also possible that the medication bring about changes in the blood cells (white cells, red cells, platelets).

Rarely, it is possible that your pet may experience bleeding, a liver problem, facial itching or develops a neuromuscular disease called myasthenia gravis. 

RECOMMENDED MONITORING:

It is important to observe whether the condition of your pet improves and if he presents any side effects. It is primordial to do a follow up with your veterinarian several  times a year to evaluate the blood cells, the concentration of thyroid hormones, and if clinical signs are present, liver function.

INTERACTIONS WITH OTHER MEDICATIONs:

Do not use methimazole, unless advised by a veterinarian, if your pet takes benzimidazole, a beta-blocker, bupropion, digoxin, phenobarbital or theophylline.

STORAGE:

Store at room temperature. Excess heat or cold are to be avoided. This medication should be protected from humidity and light.

WARNING:

This product only controls hyperthyroidism. It does not cure it. Therefore, methimazole is necessary for life.

It is recommended that pregnant women to wear gloves when manipulating this medication and wash their hands after touching it.  

Keep out of the reach of children and animals.

If your pet develops any serious adverse effects, that worsen or persist, contact your veterinarian immediately.