What Are The Repercussions Of Taking Extra Dosage Of Levothyroxine?

Posted on Mon, 11 Jul 2016

Question: I by mistake too a double dose of my levothyroxine 112 mug what do I do?

Answered by Dr. Om Lakhani (23 minutes later)

Brief Answer:
Don't worry ... skip the medication the next day

Detailed Answer:
Hi

I understand that you took double the dose of your thyroxine medication. As such there is nothing to worry. For extremely non-compliant patients we sometimes give a week's worth of dose in a single day.

I would advise you to skip the next day's Levothyroxine dose. Levothyroxine has a long half life of almost a week, so your double dose of today will cover for the missed dose the next day without changing your total weekly dose.

As a matter of precaution I am bound to inform you that if you do feel shortness or breath, chest pain or palpitation then report to your doctor ASAP, however in my experience, we don't expect the symptoms to occur with a dose of 112 x 2 (224) mcg.

Make sure this does not happen again !

Regards,
Dr. Om J Lakhani, MD
Department of Endocrinology
Sir XXXXXXX XXXXXXX Hospital,
New XXXXXXX

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Above answer was peer-reviewed by : Dr. Naveen Kumar