Heart rate 48 bpm!: I’m currently on holiday... - Thyroid UK

Thyroid UK

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Heart rate 48 bpm!


I’m currently on holiday (from England) in Montana. I’ve been living at between 5,000 and 6,000 feet above sea level for a week and a half now.

I’ve been taking my usual dose of 60mcgs a day of Liothyronine and I’m a bit worried that my pulse rate has gone down to 48bpm. It’s usually around 54. Do I need to worry? Does anyone have any idea why it may have dropped so low?

3 Replies

I am not knoweledgeable but this is a link which might be helpful:-


If I was in the same situation as you I'd add a little more T3 to see if it is helpful. After all it is the 'energy' in our body.

You can always reduce dose back down without too much bother.

fortunata in reply to shaws

Thanks, Shaws. X


This paper might be of help:

Physiological effects of high‐altitude trekking on gonadal, thyroid hormones and macrophage migration inhibitory factor (MIF) responses in young lowlander women


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