Hi, thought I understood this totally when I left the Endo earlier, now I realise that I possibly don't...brain fog me?..nah! Right, he explained the difference between Eltroxin and Mercury Pharmacy's brands - despite the compound being identical, it's that Eltroxin is a slow release and that is what makes the difference for some of us. However the brands that may be suitable for me (i.e. slow release) aren't available in the UK, so he says go ahead and see what I can buy in from abroad. He mentioned some producers GSK, Novartis and Senofi but having looked at their sites, I am none the wiser. I currently take 100mcg of Levo and 20 mcg of T3 but have reached a plateau and symptoms are returning. He is loathe to up the dosage on either as he feels that I will eventually reach another plateau and so on and so on. I think if I pushed he would have increased, but I have total faith in him, so will agree. Any help/direction please? Thanks. P.S. He was very encouraging of this site by the way!