In the early 1990 I had Graves Disease and opted to take a massive dose of Radio active Iodine to kill of the thyriod. Things have been going ok for the most part up until a the first of this year I was on .125mg levothroxine and was found to be under medicated. Then they up to .150 mg levo everything was fine up until about 2 months ago. They told me that when I had my blood tested in July that .150 was to much so they lowered it to .137 mg and now that has also been lower because they said that I was overmedicated again. I have lost some weight (not a bad thing), had extreme panic and aniexty, neck pressure, racing heart, very dry skin, cant sleep at night, muscle pain. Now I went down to the .125 and every time I take a pill it is doing the same thing. So under doctors orders I started taking half a pill and now it is still doing the same thing. Just like I am totally over medicated. Any thought???