NDT is Armour?
Armour is NDT but my understanding (at least in the US) is that there are other supplement versions of NDT that you can buy (but I have never tried them and have only taken Armour since I was diagnosed with Hashimoto's in 2103).
If yes: Armour is NOT prescribed in Germany, not as a standard. You get it if it is prescribed (I think?), but nearly no doctor will prescribe it.
I wonder why it is not prescribed in Germany and it is very common here (and not expensive so insurance companies have no problems with approving it).