What is radioactive iodine treatment?

Radioactive Iodine Treatment
Jump to

Radioactive iodine therapy

Radioactive iodine therapy is used to destroy thyroid cells.

Radioactive iodine therapy can be used for thyroid cancer to kill cancer cells that remain after surgery has been done to remove the thyroid gland. It may also be used to treat an overactive thyroid gland (hyperthyroidism).

Radioactive iodine is usually given as a liquid or capsule that is swallowed.

Why is radioactive iodine treatment done?

Radioactive iodine may be used to treat hyperthyroidism in people who have noncancerous (benign) thyroid nodules that make too much thyroid hormone.

Radioactive iodine is also used if you have your thyroid removed (thyroidectomy) because of thyroid cancer. Radioactive iodine therapy destroys any remaining thyroid tissue or cancer cells that were not removed during surgery.

After radioactive iodine therapy: When to call

Watch closely for any changes in your health, and be sure to contact your doctor if:

  • You have a sore throat.
  • You vomit.
  • You have diarrhea.

©2011-2024 Healthwise, Incorporated

The content above contains general health information provided by Healthwise, Incorporated, and reviewed by its medical experts. This content should not replace the advice of your healthcare provider. Not all treatments or services described are offered as services by us. For recommended treatments, please consult your healthcare provider.