What to Know About Potassium Iodide for Nuclear Radiation Emergencies

https://www.webmd.com/first-aid/potassium-iodide-radiation

Potassium iodide (KI) is a salt that can help protect you from
radioactive iodine. Your thyroid gland is the part of your body that’s most sensitive to radioactive iodine. Potassium iodide can help block
your thyroid from absorbing radioactive iodine if you are exposed to it…