|Purred: Fri Jul 22, '11 12:21pm PST |
|So sorry you have hyperthyroidism. Like you, I have it too. I was diagnosed with hyperthyroidism in December 2008 (2 yrs & 7 mos.) and as far as that disease goes, I'm doing fine. For most cats, it's a relatively easy disease to manage with medication, although some cats do have problems taking tapazole (methimazole) and can't take it. The other treatment options are the I-131 radioactive iodine treatment (which is a *cure* if it works) or surgery (rarely done anymore).
Up until last December, I took 2.5 mg of methimazole daily in pill form (1.25 mg twice a day). It kept my T4 at a steady 1.8 for 2 years. When I was diagnosed with kidney disease last year, we switched to the transdermal ear gel. I take the same dosage as before but the ear gel isn't doing a very good job at keeping my T4 down. (My T4 was 3.7 on my last test).
My only comment concerns the dosage of methimazole you're starting at. Vets usually prescribe 5 mg a day as a starting dose (2.5 mg twice a day) and many cats do just fine on that dose. However, many believe that's too high and lowers the thyroid hormone too fast, which can cause problems like a kidney crash if there's undiagnosed kidney disease masked by the hyperT disease. They recommend starting at a lower dose of 2.5 mg a day (1.25 mg twice a day) and testing in 2 weeks. The lower dose is often enough to bring the thyroid level down to normal and keep it there. That's the dosage I started at and it worked for me. You can always increase the dosage if you need to.
If the dosage issue concerns you and you'd like more information and input about the reasons for starting at a lower dose of methimazole, you should join the Yahoo Feline Hyperthyroidism group. Mommy got tons of good info from members of that group and it helped her a lot. However, after you learn more about it and you want to try a lower dose too, you should discuss it with your vet before changing anything. If your vet doesn't think it's a good idea, then don't do it. You never know, though. My own vet was surprisingly open to discussion about the issue and agreed to start me at a lower dose.
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