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Date of last update: 10/17/2017.

Forum Name: Endocrinology Topics

Question: Chest pains on Thyroid Meds!

 Songbird - Mon Apr 23, 2007 9:25 am

I am 55, female and have had an under-active thyroid since my 1st child was born 38 years ago. (My mother has a goiter but never on thyroid pills) Since then I have been on thyroid hormone (mostly synthetic). I was doing fairly well, but in 2000 my doctor said he thought I would feel a lot better on natural hormone instead of Synthroid, so we changed my pills. I started to get chest pains. They would come & go in waves. He tried to switch me back to the Synthroid, but I still got really bad chest pains. He tried every other kind of thyroid on the market and they all gave me chest pains. He thinks it may have happened because I was also taking Tamoxifen at the time after a lumpectomy & radiation for breast cancer, since it also has an effect on the hormones. (I have been cancer free since 1997) We stopped all thyroid, and then I started getting severe chest pains on antibiotics for sinus infections. I finally stopped the Tamoxifen after 4 years instead of 5 to see if that would help. I still get chest pain on certain antibiotics (thankfully I found a few I can still take!) but still can not get back on thyroid hormone. I am so tired now, after 7 years, I am almost bed-ridden! I can hardly get my breath when I walk, my legs feel like lead weights & I cannot stand for long. Doctors look at me like they have never heard of this, like I'm the only person in the world that has ever had this happen. I am desperate!!! Does anyone have any idea what's happening to me??? Thank you so much for any help you can give me. If I don't soon get back on thyroid I'm afraid I will never get out of bed!
 Dr. Chan Lowe - Sun Apr 29, 2007 6:27 pm

User avatar I agree that it is important to get back on the thyroid hormone. Being hypothyroid has so many effects, many of which it sounds like you are experiencing.

The big question is what is causing your chest pain. You may want to see a cardiologist for some testing. It is possible that when you are on the thyroid medicine your metabolic demand is increasing back to normal and making the heart work a bit harder leading to chest pain.

Continued follow up with your endocrinologist is also important.

Best wishes.

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