Heart rate high due to Graves : Is it normal for... - Thyroid UK

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Heart rate high due to Graves


Is it normal for the heart to be fast after 5 weeks of carbimazole I was told to stop paronolol after 4 weeks of carbimazole but it’s now 5 weeks and I am taking Bisoprolol as the paronolol were causing side effects why is my heart so fast

My levels have come down in range

Only my tsh is 0.24

Please help

9 Replies

Have you had vitamin D, folate, ferritin and B12 tested?

These can be too low and may need supplementing.

Always get actual results and ranges.

Are you on strictly gluten free diet? Often helps many with Graves or Hashimoto's

Ideally ask GP for coeliac blood test first





Thank you so much

I will read this information now

I will definitely get my bloods done tomro

Is it normal thou for ur heart to still be so fast at 126 bpm

in reply to Zahrazori

Sounds like you need to restart propranolol and see GP

Thank you I will see him tomro thank you so much

Can tsh being 0.24 cause my heart to go so fast maybe?

in reply to Zahrazori

You didn't put a range in, nor did you list results for free T3 or free T4, but, yes, being hyperthyroid can make you tachycardic. You need a beta blocker like Bisoprolol and need to suppress thyroid function. Getting the dose right for your Carbimazole can take awhile.

You'll need thyroid tests every 6 weeks.

Hi I was diagnosed with Graves 12 weeks ago. Only found because my heart was out of control I'm on 40mg carbimazole and 11.25 Bispolrol and also Digoxin. Heart rate down to around 80 now but it's taken 10 weeks, and now my breathing is really bad, I struggle to even do small everyday tasks. Is there an end to this 😞

Welcome to the forum. I don't know much about Graves but hope this will start the ball rolling. Have you been in touch with your consultant? I understand from others that they should be keeping regular checks on you so I would ring the consultants secretary and tell her how you are feeling but now have a new problem and can your consultant advise what you should do as finding this rather frightening. Hopefully you will get a speedy reply.


I have Graves and had 2 bouts of over-active thyroid in the past 10 years. The first time, it took only 2 weeks for my heart rate of become normal again, the second time 2 months.

As I've already mentioned here: when you have Graves, it's very important to buy a heart rate monitor: without it, it's impossible to actually know if your heart rate is too high or not. Vitamin D, folate, ferritin, B12 do not interfere with your heart beat and are usually normal for people with an over-active thyroid - except vit D in winter of course.

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