Is Potassium Iodide (KI) Safe?
In short, Yes. Potassium Iodide Tablets are FDA Approved.
The American Thyroid Association says that potassium iodide fills the thyroid with iodide. It prevents the absorption of radioactive iodide. Taken at the proper time it protects the thyroid from radioactive iodide from – air food, milk and water. Potassium Iodine is a non-prescription drug and can be bought over the internet and at some pharmacies. FDA approved products include Iosat at 130mg. With proper packaging the shelf life should be at least 5 years.
Millions of people have taken Potassium Iodide with very few side-effects reported. People who are allergic to iodine should not take potassium iodine. Prolonged use can become a serious problem for very young children. These children should be seen afterward by a health professional. Patients with Graves hyperthyroidism or with autonomous functioning thyroid nodules should also seek a health professional.
Babies and young children are at the highest risk to radioactive iodine exposure. Refer to the FDA for recommended dosages.