MedicinePOM

Potassium Iodide

Iodide solution used as an expectorant in chronic lung disease.

Clinical information

Common uses

loosening stubborn mucus in asthma, bronchitis and emphysema

Common side effects

stomach upset, pain, nausea, vomiting, diarrhoea
skin rash
salivary gland swelling or tenderness

Cautions

prolonged or high doses can cause iodine poisoning (iodism)
can cause thyroid problems and goitre
not with iodide sensitivity

Interactions

lithium and antithyroid drugs (more thyroid suppression)
potassium-sparing diuretics and ACE inhibitors (dangerous potassium rise)
potassium-containing medicines

Pregnancy: avoid — can harm the baby's thyroid

Reference information, not medical advice — always follow your doctor or pharmacist. Source: DailyMed, dailymed.nlm.nih.gov, SSKI (potassium iodide) oral solution label, setid ca1d3449-ea29-49a4-8863-365ec95f1553 (accessed 2026-08-16)

Approved brands & formulations1

Brand name	Dosage form	Strength	Importer	Category
Potassium Iodide	Saturated solution	—	—	POM