Hi Doctor, I am a thyroid patient since 3 years, l am regularly taking thyroxin 100mg. 6 months back my TSH level was 0.50, so, I started to take thyroxine 100mg alternate days. now if I take thyroxine daily I am getting neck muscle pain, some times I am getting irritation, depresion, right chest pain like that. Is regular mediaction of Thyroxine can cause muscle problems? Yesterday I went for TSH testing, the TSH level is 10, now what should I do?