Hi guys I'm new to this site although not new to taking Levo which I take 125mg and have done over 20 years give and take. The dosage I've taken over this time goes up and down. I've recently had blood test back again last Friday and doc says that the results are satisfactory?? For who I don't know, because for me they not, my mussels ache, I'm cold all the time, constipated, put on half a stone in 2 weeks and only sleeping a few hours a night. I know my own body and after suffering with an under active thyroid for over 20 years I know the dosage is no right. I've only recently heard about T3 and NDT so please help. You keep mentioning grains? Sorry for being so thick but I presumed they would be in a tablet form? Would I still need to take my Levo with them? Can anybody send me privately direct to me email address any links to be able to purchase them from? If I go ahead and decide that this would be the right medication for me, would I need to wean myself off the Levo first?