Changing from NDT to Levo: Hi, I’m looking for... - Thyroid UK

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Changing from NDT to Levo

Lou001 profile image
6 Replies

Hi,

I’m looking for some advice on dosage please. Due to the current situation I have been unable to source my NDT. I was taking 3 1/2 grains each day. Each grain/tablet was 60mg. What would you recommend with regards to how much Levo I should be taking please? Thank you 😊

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Lou001
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6 Replies
Lou001 profile image
Lou001

Hi Scazzoh, thank you for your reply. The NDT I was taking was from Thailand, Greater Pharma. So you think 325mcg or 350mcg? I started Levo last week and on 100mcg so sounds like the dose is too low?

Lesleyg13 profile image
Lesleyg13

Please be very careful here, Scazzoh's calculations are incorrect. The Greater Pharma brand was called "Thiroyd". This was slightly weaker than the other NDT brands such as Thyroid-S.

One grain of Thiroyd contained:

T4 = 35mcg, plus T3 = 8.31mcg per grain.

Your previous 3.5 grains of Thiroyd is equivalent to:

3.5 x 35mcg T4 = 122.5mcg T4

PLUS

3.5 x 8.31mcg T3 = 29.1mcg T3

I've seen a multiplier of 3 or 4 used to convert the T3 to a T4 equivalent, so that adds between 87mcg to 116mcg extra

When rounded this comes to between 210 and 240mcg levo equivalent.

So a lot more than 100mcg of levo.

Lou001 profile image
Lou001

Thank you both so much, I really appreciate your advice. I think I will up to 200mcg as this is nearer to what I’ve been used to. I will get a blood test in 6 weeks and also see how I feel generally

Lesleyg13 profile image
Lesleyg13 in reply toLou001

Best of luck! I'll be interested to hear how you get on with the switch. I've recently ordered the new Thai brand to try, Tru Thyroid, which again is a different strength.

Lou001 profile image
Lou001 in reply toLesleyg13

I’ll keep you posted. I’d be interested to see how you get in too. I must admit I’m feeling apprehensive as I don’t want to feel unwell again. Good luck!

Lesleyg13 profile image
Lesleyg13

I've not used Armour but the link below quotes one grain of Armour as 38mcg T4 and 9mcg T3. This is the same as the widely used Thai brand Thyroid-S.

However you used 48mcg of T4 in your calculations for Armour?

tpauk.com/main/article/ingr...

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