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Tapazole[Branded Methimazole] is an inexpensive drug used in cats to treat an overactive thyroid gland hyperthyroidism. Your cat's abnormal appetite, weight loss and heart issues will go back to normal once the thyroid hormone levels are restored. It is also given as a kidney protectant to dogs receiving cisplatin chemotherapy.
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Item# Size/Desc Qty Price
5 mg per tablet
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This item requires a RX

**Note: This product requires a veterinarian's prescription to purchase.At checkout you will need to provide your veterinarian's FAX or email address. We will then send him or her a prescription verification that he or she will need to sign and return before we can ship you this product.

Dosage and Administration:

Read and follow the label carefully.
Give the medication at the same times daily.
Give the exact amount prescribed and only as often as directed.
It is usually given one to three times a day.
Maybe mixed in the food.

Cats:  it is usually given for the remainder of the cat's life. Before starting therapy, baseline blood work should be performed to assess thyroid levels and your pet's overall health. Periodic blood work will be necessary to monitor thyroid levels and the drug's effect on your pet's health. Dose adjustments will be made based upon these results and an assessment of how your cat is responding clinically.

Possible Side Effects:

Decreased appetite, vomiting and lethargy. You may notice these within the first weeks of treatment. Liver problems including the above symptoms, plus dark urine, yellowing of the gums, skin or eyes, facial itching resulting in scratching or bleeding tendencies Underlying kidney disease may become apparent Rare cases of myasthenia gravis severely weakened muscles, difficulty swallowing Unusually tired, fever temperature over 103ºF, bruising or bleeding If you notice any of these symptoms or anything else unusual, contact your veterinarian

Possible Drug Interactions:

Interactions may occur with amitriptyline, beta-blockers, clomipramine, cyclophosphamide, digoxin, metoprolol, modified live vaccines, omeprazole, propanolol, theophylline and warfarin If your pet experiences any unusual reactions when taking multiple medications, contact your veterinarian.


Use with extreme caution in pets with anemia, clotting disorders, bleeding, low white cell and platelet counts, kidney, liver or immune system diseases Use with extreme caution in pregnant or nursing pets. The young should be placed on milk replacer after they've nursed colostrum first milk immediately after birth If your pet has had an allergic reaction to methimazole or like products