What is NDT?: Can someone please explain to me... - Thyroid UK

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What is NDT?

Nefatiti40 profile image

Can someone please explain to me what NDT is and how it differs from Armour Thyroid? I was recommended a product from Thailand which says on it NDT Analytical Reference Standard and the title Thiroyd. I felt better on it that on Thyroxine but am now not sure what I was taking and in any case its proving hard to order it now for several blocks on it. I have Hashimoto's Disease for 20 plus years.

Many thanks

3 Replies
SeasideSusie profile image


NDT = Natural Desiccated Thyroiud

Armour Thyroid is NDT

Thai Thiroyd is NDT

They're just different makes.

I believe they all use thyroid powder USP so there should be little difference other than the excipients/fillers.

Thankyou Suzie for your help

Hello Nefatiti40

SeasideSusie is correct. NDT is just the abbreviation for Natural Desiccated Thyroid. Armour, Efra, NatureThroid, NP, WP, Thyroid S, Thiroyd, TR Man etc all come under this.

Could you PM me about which website you purchase Thiroyd from please?

Thank you


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