Replacement dosage T4/T3 for 175mcg Naturethroid - Thyroid UK

Thyroid UK

140,281 members164,998 posts

Replacement dosage T4/T3 for 175mcg Naturethroid

archipoeta profile image
3 Replies

Hello

I'm coming to the end of a batch of good Naturethroid, bought 2 years ago.

The replacememtNP Thyroid brings back the hypo symptoms almost at once.

I have T4 and T3. Given that each grain of NDT contains 38mcg of T4 and 9 of T3, is

70 mcg of T4 and 16 of T3 the right dose?

I can't afford the blood tests, even if I could get blood drawn at the moment. I just need an answer!

Thanks.

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

Rather depends how much Naturethyroid you were taking. How many grains NDT is 175 mcg? I grain = 60 mg. So, 3 grains would be 180 mg. That would be approx. 114 mcg T4 and 27 mcg T3, so best to round that up/down to 100 mcg levo and 30 mcg T3.

archipoeta profile image
archipoeta in reply to greygoose

Thank you so much for helping. I'm trying to fast today, which probably doesn't help mental clarity.

Sorry. 1 .75 grains. 105 mg

greygoose profile image
greygoose in reply to archipoeta

No, it wouldn't. Why are you fasting? I really don't think that's a good idea for hypos.

So, 1.75 grains NDT = 66.5 mcg T4 + 15.75 mcg T3. Which is not easy to translate into doses of synthetic T4 and T3. So, how do you feel on that dose of NDT? Could you perhaps tolerate a little increase in dose? Say 75 mcg T4 and 15 mcg T3? That's about the nearest equivalent. You could adjust from there.

Not what you're looking for?

You may also like...

T3 and T4 dosage

Hi everyone, Doctor is trying me on T3 with T4, but he has not lowered my T4 dose of 125, and given...

Help with T4/T3 dosage please.

Hi, A couple of years ago I was taking 75mcg T4 given to me by my GP, but wasn't brilliant and...

T4:T3

In September my TSH was 3.75 (0.27 - 4.2) T4 was 13.8 (12-22) T3 was 4.56 (3.1-6.8) This blood...

T4/T3 levels

Hi. Quick question. I've just had blood test for TSH, T3+T4 after starting T3 in December from...

Advice for starting T3 - dosage levels for T3 and T4

First of all, I want to say thanks for this site and to all those who have helped me get more...