Hope someone can help. In January 2016 after feeling rubbish for many months, I finally went to see my gp who ordered blood tests. The results came back the next day TSH <0.01 and T4 78.1, prescribed propranolol for shakes and heart rate and referred to endo. Saw endo on Feb 4th, she diagnosed thyrotoxicosis, prescribed 40mg carbimazole to be taken once daily, she also did bloods and T4 was at 71 (lower without being on any medication). Had repeat bloods for TSH, FT3 and FT4 at end of March and results TSH <0.01 no change, FT3 4.5 and FT4 12. I have to say that for the last two weeks before the blood test at the end of March I didn't take the tablets regularly, this was partly due to feeling really sluggish and cold. I suspect that had I taken them then my results would have been a lot lower. The dose was reduced beginning of April to 20mg once daily. I have to be honest and say that I had a bit of a melt down and just stopped taking the tablets for over a week and when I started taking them again it wasn't every day. Had new bloods done before my clinic appointment this Monday and they are TSH <0.01, FT3 9.5 and FT4 31.1, Endo has advised me to increase the dose to 30mg as I am now overactive, but the way I am seeing it, had I took all the tablets at the dose I was prescribed then I would have been way under. I don't feel that she listens to what I am telling her. Has anyone else been through this?