potassium iodide (cont.)

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Medical and Pharmacy Editor:

Expectorant: 60 – 250 mg by mouth every 6 hours.

DRUG INTERACTIONS: Potassium iodide should not be given together with sodium iodide I-131 (radioactive iodide) that is being used to treat thyroid disease, because potassium iodide can prevent the absorption of sodium iodide I-131 into the thyroid gland. Potassium iodide should be discontinued at least 3 to 4 days prior to using sodium iodide I-131.

Potassium iodide should be used with caution with lithium because concurrent use of both medications can lead to hypothyroidism.

PREGNANCY: There is increased risk of thyroid suppression in the newborn with potassium iodide. Potassium iodide should not be used during pregnancy.

NURSING MOTHERS: Potassium iodide is excreted in breast milk. Use in nursing mothers can cause skin rash and thyroid suppression in nursing infants. Therefore, potassium iodide should not be used in nursing mothers.

SIDE EFFECTS: Common side effects of potassium iodide are stomach upset, diarrhea, nausea, vomiting, skin rash, weakness, numbness, fever, and swelling of throat or neck.

REFERENCES: FDA Prescribing Information
Potassium iodide – Medscape

Medically Reviewed by a Doctor on 10/6/2014

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