Is it normal for cats with hyperthyroidism to have a big appetite?

Jennifer MikusJennifer Mikus PittsburghMember Posts: 30
She is on of methimazole twice daily. I apply it to her ear lobes. Anyway, is the illness or medication making her extra hungry.

Best Answers

  • Lisa DaversLisa Davers SacramentoMember Posts: 3,642
    Accepted Answer
    It is the high thyroid hormone levels that speed up your metabilosm so you are hungry. Usually once a cat is on the meds their appetite will go back to normal. If you just started the meds give it a week or so to start working but if she's been on them for a while she may need a higher dose. In cats hyperthyroidism is usually caused by benign tumours that produce extra hormone. These tumours keep growing and you may find you need to increase the dose to keep the hormone levels in the normal range and the symptoms under control. It's worth checking with your vet and getting a blood test to check the thyroid level. If your vet keeps needing to increase the dose and that starts to cause side effects like nausea your cat may be a good candidate for radioactive Iodine 131 treatment. This can cure your cat so she wouldn't need the meds. If you do that make sure you go to a place that scans 1st to adjust the dose and that gives a success rate of ~98%.
  • Jordan SpivaJordan Spiva Los Angeles,CAMember Posts: 355
    Accepted Answer
    yes, hyperthyroidism= a faster metabolism, so therefore, it's much harder for the cat to keep weight on.
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