Are you thinking of Carbimazole?
"Carbimazole is a pro-drug that is converted to methimazole in the body. A
recent study of the efficacy and safety of carbimazole in the treatment of
hyperthyroidism in cats suggests that it may be associated with less adverse
effects than methimazole. In that report, only 4% of cats developed
hematologic abnormalities (lymphocytosis and leukopenia). These
abnormalities were very mild and cessation of carbimazole therapy was not
Carbimazole is not available commercially in the United States due to a
marketing agreement with Lilly (Tapazole). However, carbimazole is available
through compounding pharmacies."
On 9/3/08, elfinmyst@... <elfinmyst@...> wrote:
> Sorry, I posted my first reply before I read this one :) There is an
> alternative drug to Felimazole.. it's an older one which was used several
> years ago
> and I can't remember the name, but Arnold was going to go on should the
> Felimazole not work, but it turned out it was a tumour he had at the end.
> Maybe you could try that. I`ve used it in the past (15 years ago) with
> success.. just wish I could remember the name. Your vet could prescribe it
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