• Highest rate of cure for hyperthyroidism
• Destroys thyroid tumors regardless of location
• Cure of hyperthyroidism usually permanent; lowest rate of recurrence
• Simplest treatment; single injection, usually given subcutaneously
• No daily pilling
• No anesthesia
• No serious complications
• Limited monitoring required after successful treatment; no ongoing therapy required

• Radioiodine is moderately expensive.
• Hospitalization is required (5 days to 2 weeks).
• Owner and cat are separated during the quarantine period (no visitation).
• Most facilities require that the cat confined indoors and have limited contact with owners for a period of time after discharge.

Radioiodine treatment can completely cure hyperthyroidism by destroying only the thyroid tumor. Over 95% of all cats treated never need future treatment. The treatment is simple: a single injection. Your cat will need to stay with us in one of our Hypurrcat facilities for 5 to 10 days post-treatment (required by law), but will receive plenty of love and care. His/her thyroid function should return to normal within 1 to 4 weeks. The radioiodine should not affect normal thyroid tissue and should not cause any harmful side effects.