Alternative Cat Thyroid Meds

Thyroid problems in cats can include hyperthyroidism (overactive thyroid) and hypothyroidism (underactive thyroid). With hypothyroidism, the only treatment is to replace the hormones that aren't being produced. There are several treatment options for hyperthyroidism. Methimazole can be administered to the cat for the rest of its life. Other alternatives are available if methimazole can't be tolerated or isn't effective.

  1. Iopanoic Acid

    • Ipodate has been given to cats to keep the T4 hormone from being converted to T3. The thyroid produces the T4 hormone and it is normally converted to T3. When there is too much T3, the problems associated with hyperthyroidism, such as weight loss, intestinal problems, and increased thirst and urination, occur.

      Unfortunately, ipodate is no longer available. But iopanoic acid appears to have the same effect, according to the Veterinary Partner website (http://www.veterinarypartner.com/Content.plx?P=A&A=510). It is difficult to obtain and is only available in compounding pharmacies.

    Potassium Iodate and Propranolol

    • Potassim iodate works on the thyroid problem by blocking the thyroid's use of iodine. Propranolol is used for treating heart disease. This is a common problem for cats with hyperthyroidism, which is why propranolol is taken along with potassium iodate.

      Possible side effects include depression and upset stomach. Studies of the long-term effects of using these drugs together have not been conducted.

    Natural Alternatives

    • Numerous claim to treat hyperthyroidism naturally with herbs and supplements. Two of these are Resthyro by NHV and Nature's Herbs for Pets Thyroid Calming.

      These claims have not been proven in any type of study, but the side effects of such medications are generally pretty low. Try one of them for a few weeks before turning to more conventional medicines. Make sure you talk to your veterinarian before trying these in conjunction with conventional medicines.

      If side effects such as vomiting or diarrhea occur, try stopping the medicine for two days and then give half a dose and then slowly increase to increase the cat's tolerance.