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

Thyroid UK

140,289 members165,009 posts

Calcium channel blockers - impact on T3 and T4

tcpace profile image
3 Replies

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.

Written by
tcpace profile image
tcpace
To view profiles and participate in discussions please or .
Read more about...
3 Replies
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.

Marz profile image
Marz in reply to greygoose

.... absolutely agree !

Not what you're looking for?

You may also like...

OK Vitamin D effects calcium, so what's the connection with 'calcium channel' blockers like beta blockers given for palps etc?

Researching any ill effects of taking Vit D supplements. I feel so much better but still have...

thyroid hormones and beta blockers

I remember reading somewhere in the forum that beta blockers decrease T4 to T3 conversion. Does...

Wisdom on T3 dosage and calcium and T4

I have been given, I think, the lowest dosage of T3 - 5mg which I have to split in half to take...

t3 and t4

Stopped levo 3 days ago due to being v unwell. Having some withdrawal symptoms but can i just take...

T4 'intolerance' and T3 treatment

Apologies for the long post and apologies for any inaccuracies - I'm an engineer not an...