Changing from NDT to Levo

[Lou001]

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 😊

[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]

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]

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 in reply to Lou001]

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 in reply to Lesleyg13]

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]

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...