The first few months of treatment require repeated blood tests to assure the proper dosage of medication is being given. After the correct dosage is achieved, your veterinarian may recommend regular blood tests to monitor the condition. Radioactive Iodine - Radioactive iodine provides a simple, effective and safe treatment for cats with hyperthyroidism. The radioactive iodine concentrates in the thyroid and destroys the abnormal tissue. This may not be the best treatment option if there is also heart or kidney disease.
Treatment involves an extended stay at the hospital.
A single dose of the radioactive iodine usually restores normal thyroid hormone levels. Occasionally after treatment, hypothyroidism develops and thyroid supplementation is needed. Repeat blood testing is required after treatment. This treatment is only available at hospitals licensed to use radioactive medications. Surgery - Thyroidectomy or removal of the thyroid gland is an effective treatment for hyperthyroidism.