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A cat with hyperthyroidism takes pills. According to Cornell, how long does medication treatment last?

For life. Medication controls it but does not cure it.

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  1. One week
  2. Lifelong ✔
  3. Until the cat gains weight

Why: Pills or gel control an overactive thyroid but do not cure it, so treatment must continue for life. Radioactive iodine or surgery can cure it, and a vet helps pick.

Huh, didn't know that: Cornell calls radioactive iodine the treatment of choice where available; cats usually stay in the hospital three to five days.

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Why did the doctor tell the nurses to be quiet when walking past the medicine cabinet? So they wouldn't wake the sleeping pills!
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References

Answer: Lifelong. Pills or gel control an overactive thyroid but do not cure it, so treatment must continue for life. Radioactive iodine or surgery can cure it, and a vet helps pick.

  1. Cornell Feline Health Center, Hyperthyroidism in Cats www.vet.cornell.edu/departments-centers-and-institutes/cornell-feline-health-center/health-information/feline-health-topics/hyperthyroidism-cats
    Lifelong treatment, usually involving twice-daily oral dosage, will be required.
    Checked 2026-10-10.

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