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Dr. Phil, MD
Dr. Phil, MD, Board Certified Physician
Category: Medical
Satisfied Customers: 58761
Experience:  GP in the United States
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I've been on 100 mcg levothyroxine several years now, but

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Hi. I’ve been on 100 mcg levothyroxine for hypothyroidism several years now, but some months ago, my dose was increased by my clinic/doctors to 125 mcg. However, I held off taking the greater amount for some time, eventually deciding to give it a go; this was some time after my blood pressure and other functions were declared good. After a day on the higher dose, I had my heart rate checked and it was fine. I asked the nurse if I could come back down to 100 mcg, and she said yes, but to wait for a while and have a thyroid/blood test. However, after two days, I feel the higher dose has made me feel jittery. My question is: do you think it would be OK to come back down to the 100 mcg dosage? I feel so much better on it. Would it be safe to go back down to the lower dose?

Yes, it would be fine to go back

just let your doctor know

let me know if you have other questions.

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Customer: replied 1 year ago.

Could the 125 mcg be affecting me so soon? I ask because of levothyroxine's long half life. But you say, it's safe to go back down?

Yes, absolutely could be affecting you

no doubt about it

yes it safe

Customer: replied 1 year ago.

I just asked for some extra Q&A, it could affect me? Do you think it could be dangerous? I've had my heart checked and blood pressure, they are OK.

yes, go ahead and request it

Customer: replied 1 year ago.

I did, I'm not sure if it's come through yet though...

It says you declined it

Dr. Phil, MD and 3 other Medical Specialists are ready to help you
Customer: replied 1 year ago.

It's been accepted, doctor...

Ok. got it


short term this is not dangerous.

you are fine to stop and go back to the original dose