hello, I have had a thyroid problem for about 15 years and have lost my hair for all that time. It never gets better, but I have been on every dose I can think of along with just about every brand out there.(levoxyl, synthroid, thyrolar, cytomel) My thyroid has never been stable or at a level I thought was great. The only good thing at this time is that my hands and feet are no longer cold and Iam not tired with black circles under my eyes anymore, but the hairloss still persists and I have been to several great doctors and no one has done a thing to help me out. I think after 15 years of losing my hair, I should of been bald by now but at least my hair is replenishing itself somehow. It is thinner than it used to be and some days are better than others with the hairloss but it still comes out. I have been on a stable dose of levoxyl now for about 9 months. Iam hoping this will slow down. Don't give up, I have not. I keep hoping it will stop.