Potassium Iodide (KI) and Radiation Emergencies

This animation shows how potassium iodide (KI) can protect the thyroid from radioactive iodine (I-131) when used as directed in some radiation emergencies. It also describes the limitations of KI and its possible side effects. Do not take KI unless directed by a healthcare provider, or public health or emergency response official.

Release Date: 4/1/2022
Source: National Center for Environmental Health

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