This medication is used to protect the thyroid gland after radioactive iodine treatment or during medical scans using radioisotopes such as MIBG scans. The medication works by blocking the thyroid gland from absorbing the radioactive iodine into the thyroid.
This medication may also be used to prepare the thyroid gland for surgical removal, and to treat certain overactive thyroid conditions (e.g. hyperthyroidism, thyroid storm).
The usual dose of Lugol’s iodine is a very small amount, measure the correct dose carefully using the 1mL-syringe supplied by pharmacist. Further dilute the measured dose with water, juice or milk before administering, to improve the taste and minimize stomach upset.
For MIBG scan: This medication should be started 1 day before your MIBG dye injection and continued for a total of 3 or 5 days, depending on the type of dye injection. Please check with your healthcare professional.
If you forget to take a dose, take it as soon as you remember. If it is almost time for your next dose, skip the missed dose. Then take your next dose at the usual time. Do not take two doses to make up for the missed dose.
Inform your healthcare professional if:
Some medications should also be avoided prior to MIBG scan. These include amlodipine, nifedipine, salbutamol, oxymetazoline, pseudoephedrine, promethazine, tramadol, caffeine, and certain antipsychotics.
This list is non-exhaustive, do consult your doctor or pharmacist for more information.
Common side effects include:
Rare but serious side effects include:
The symptoms of a drug allergy include one or more of the following:
If you experience any of these symptoms, you should stop your medication and see your healthcare professional immediately.
Pack this medication into a black trash bag and seal it tightly before throwing into the rubbish chute or bin.
Disclaimers
If you take more than the recommended dose, please seek medical advice immediately. The information provided on this page does not replace information from your healthcare professional. Please consult your healthcare professional for more information.
This article is jointly developed by members of the National Medication Information workgroup. The workgroup consists of cluster partners (National Healthcare Group, National University Health System, and SingHealth), community pharmacies (Guardian, Unity, and Watsons), and the Pharmaceutical Society of Singapore. The content does not reflect drug availability and supply information in pharmacies and healthcare institutions. You are advised to check with the respective institutions for such information.
Last Updated on March 2021
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