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Lugol’s solution is a liquid that contains an iodine and potassium iodide concentrate.
We often prescribe Lugol’s solution to decrease the risk of thyroid storm in patients who will have surgery to remove the thyroid. This solution could cause chemical burns when it is not used correctly.
How to Take it
Make sure you follow the directions on the label. Always mix Lugol’s solution with 8 ounces (1 cup) of water or juice. Never use it directly in the mouth.
The dose depends on what it is used for. The normal dose for thyroid surgery is 8 drops, 3 times daily.

Side Effects
Many people have no side effects or only have minor side effects when used properly.
If you have any of these symptoms, call your doctor right away:
Signs of allergic reaction (rash, hives, or itching)
Diarrhea
Trouble breathing, swallowing or talking
Very bad upset stomach
Vomiting
If you Miss a Dose
Take a missed dose as soon as you remember. If it is close to the time for your next dose, skip the missed dose and take the next dose at your normal time. Do not take 2 doses at the same time.
How to Store
Store it at room temperature and protect it from light. Discard any remaining solution.