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Would Discontinuing Synthroid Cause Adverse Effects?

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Posted on Thu, 29 Oct 2015
Question: I have been on a very small dose .1mg of synthroid for a few years. The past 4 days I've been sick and forgot to take it. I would like to not take it any more because I don't really think that I need it. Can I just quit taking it?
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Answered by Dr. Vaishalee Punj (10 minutes later)
Brief Answer:
Not taking will show effect in 2-3 weeks

Detailed Answer:
Hi and thanks for your query.

The effect of not taking supplement will show in 2-3 weeks. 0.1 mg is 100 mcg and is not very small. It may be considered as small dose. Not taking it will not cause any emergency issue. You will just feel lethargic. Reducing the dose and checking would have been a better idea.

So if you don't take it you will need to check your thyroid profile in 3-4 weeks to see how you are doing. If it shows low thyroid then you will need to restart it.

Hope it helps.

Dr Vaishalee
Note: For more information on hormonal imbalance symptoms or unmanaged diabetes with other comorbid conditions, get back to us & Consult with an Endocrinologist. Click here to book an appointment.

Above answer was peer-reviewed by : Dr. Vinay Bhardwaj
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Answered by
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Dr. Vaishalee Punj

General & Family Physician

Practicing since :2003

Answered : 3262 Questions

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Would Discontinuing Synthroid Cause Adverse Effects?

Brief Answer: Not taking will show effect in 2-3 weeks Detailed Answer: Hi and thanks for your query. The effect of not taking supplement will show in 2-3 weeks. 0.1 mg is 100 mcg and is not very small. It may be considered as small dose. Not taking it will not cause any emergency issue. You will just feel lethargic. Reducing the dose and checking would have been a better idea. So if you don't take it you will need to check your thyroid profile in 3-4 weeks to see how you are doing. If it shows low thyroid then you will need to restart it. Hope it helps. Dr Vaishalee