I have had Graves for over 10 years, and although I have failed to go into "remission" permanently. I have been doing great on 25 mg of PTU (1/4 pill a day) for the past year. (Before this year, I was on and off Methimazole, but would always slip back into hyper eventually). My Endo says I will need surgery eventually due to unknown long term sides effects of using PTU (we both ruled out RAI due to eye issues that I have) . However, it seems that surgery is such a drastic step for treating something that is so well-controlled on such a low dose of meds. We are even trying to go as low as 1/4 pill every other day. I am VERY sensitive to being Hypo-a few times when they over-medicated me and my THS approached 5, I had the symptoms of someone with a TSH of 50 and was unable to go to work due to chronic fatigue,joint pain, and depression (all of which resolved when we get my TSH under 2 and my Frees in range). The symptoms of hyper have never bothered me, other than feeling slightly "hyper" at times; no heart issues. And much prefer feeling a little hyper than being unable to crawl out of my bed. I'm a professor and a researcher, and I simply can not imagine how I would keep my job during the year following surgery if it brings on these hypothyroid symptoms while we fiddle with doses, etc. I realize PTU carries the risk of liver disease, but how big is this risk with such a small dose? How many years might this be a safe option (yes, I realize nothing is 100% safe).