Calcium channel blockers - impact on T3 and T4 - Thyroid UK

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Calcium channel blockers - impact on T3 and T4

tcpace profile image
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Came across this interesting article (abstract) which suggests, on the basis of rabbit studies, that calcium channel blockers (e.g. for high blood pressure) may interfere with levels of T3 and T4.

scopemed.org/?mno=40603

I also note that the calcium channel blockers can inhibit uptake of T3 and T4 in rat cardiomyocytes - see

ajpheart.physiology.org/con...

My wife has taken Amlodipine (a calcium channel blocker) for many years. After a hemithyroidectomy, she can only function by taking 40mcg T3 daily. You have to wonder whether the Amlodipine is at least part of the problem.

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tcpace
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Marz profile image
Marz

I have read that raised blood pressure is a symptom of other issues. Adrenals ? - Low magnesium - Ferritin - Folate - B12 ??

greygoose profile image
greygoose in reply to Marz

It's a symptom of low T3, too.

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Marz in reply to greygoose

.... absolutely agree !

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