Methimazole is just one of the several treatment options for hyperthyroidism in It cats. It works by reducing thyroid hormone (T4) production and release. While it can help control the level of T4, it does not exert any effect on the tumor that is causing the increase in T4 production by the thyroid gland. This means that the tumor continues to grow without abate, and there is usually a need to increase the dosage of methimazole over time. An advantage of this medication over other treatment options is that it’s inexpensive and is readily available. The pill form of the drug is given by mouth (orally); there’s also a cream form that is applied transdermally by rubbing a dollop on the tip of the inner ear of the cat. You should be alert for side effects associated with oral methimazole, such as nausea, vomiting, lethargy, and appetite loss. Call your vets Marietta, GA if you notice any of these symptoms.
