T3 side effects : Good morning, I have recently... - Thyroid UK

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T3 side effects

Flamingo60 profile image
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Good morning, I have recently started T3 (around 7 weeks ago). I was prescribed 10mcg daily alongside 62.5mcg of Levo. After the first week I dropped the dose to 5mcg due to palpitations. I increased back up to 10mcg 3 weeks later. In the last couple of weeks I have been experiencing a lot of joint pain, pretty much everywhere. Has anyone else had this experience? Feels more like tendonitis than arthritis type pain. I have a blood test booked in 2 days time so interested to see my results. Definitely not feeling the benefits yet.

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Judithdalston profile image
Judithdalston

When I first started T3 , added to levo, on a tiny 1/8 th ish ( ie couldn’t be that accurate cutting) of a 25 mcg Tiromel pill I quickly felt it as heart palpitations and a loosening of the stiff painful hips…weird. If the T3 is, like the old beer ad, reaching parts that was not previously reached could your body be interpreting this new sensation as pain instead? I have fibromyalgia anyway and frequently can’t tell the difference between hot or cold water running into the bath, just know it’s not tepid, as pain signals muddled…. I just a thought Flamingo that you might be experiencing the same type of thing with T3 at the moment….

Flamingo60 profile image
Flamingo60 in reply to Judithdalston

Interesting thoughts, thanks for replying. I haven’t had any joint stiffness or pain before…not before starting thyroid meds anyway. Was a runner until recently and had no joint issues at all 🫤

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