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Medicines potassium iodideQuestion & answer

potassium iodide · Medicine question

What radiation does potassium iodide protect against?

iatroX medicinesPublished 21 August 2026Reviewed 21 August 2026

The answer

Answer

It reduces thyroid uptake of radioactive iodine. It does not protect against external radiation or other radioactive substances.

Sources for this answer

UK GovernmentUK Government · Reputable Web

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potassium iodide

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Should it be taken before any emergency warning?Can iodised salt replace the tablets?Can the tablets be crushed?Can it affect thyroid scans or radioiodine treatment?