Medical Therapy of Feline Hyperthyroidism

Behrend E.N.

Compen Contin Educ Pract Vet., 1999. 21(3): p.235-244.


Hyperthyroidism is the most common endocrinopathy of cats. Antithyroid medications and radioiodine constitute the two main medical options. Methimazole and carbimazole are effective in most cats, but monitoring is required to assess efficacy of therapy and development of side effects. Ipodate is an oral agent that may be used as an alternative in some cats. Radioiodine therapy is also highly successful, but its use may require prolonged hospitalization (depending on state and local ordinances). Although [beta]-adrenergic blockers do not affect thyroid hormone concentration, they reverse some of the effects of the hyperthyroid state and can be used in combination with antithyroid medications or surgery. (Author Abstract)