In a nutshell. Been suffering underactive thyroid symptoms forever but my blood tests are all normal ( doc says ) i managed to get a trial of levo for the last three months. First two months doc gave me 25 macragrams a day, this did nothing so for the last month I doubled the dose to 50, again still feel like a zombie, more so. Went docs today she and has told me I have to have more blood tests to see if my bloods have normalised before she'll prescibe me more. How can my blood normalise if she says its normal anyway? I don't know what to do, I just feel so lost.