Potassium iodide helps block radioactive iodine from being absorbed by the thyroid gland and is used to protect people from the carcinogenic effects of radiation exposure after an accident at a nuclear power plant or other nuclear explosion. The effectiveness of Potassium Iodide as a specific blocker of thyroid radioactive iodine uptake is well established. Do you have a nuclear power plant near you? Are you worried about the possibility of radiation exposure following a terrorist attack? Don”t wait until the raids start climbing to prepare. Be safe with potassium