My daughter had the same reaction to Tapazole and has been on PTU for the past five years and is doing great on it. Good luck!
Hives do not indicate high or low thyroid hormone levels.
PTU might be worth trying if you are having an allergic reaction to Tapazole. Methimazole would probably produce the same reaction, as it is the generic form of Tapazole.
Carbimazole metabolizes into Methimazole after you take it.
I don't know if it would produce a similar reaction, but it might be worth trying.
A lower dose sounds like grasping at straws. You have only been on the drug for a few weeks, so you don't know if the dose you were taking is correct or not. Regardless, if you are having an allergic reaction to the drug, a lower dose would still produce a reaction, I would think.
I would ask to try a different drug.
can u try carbimozle they are working for me at moment on them nearly 4 week's.30 mg a day u can ask ur doc about them take care ann4512