Hi my name Shirley Gonzalez and I have few questions for anyone. A little background I got sick in June 2008 with hyperthyroidism and that specialist doctor put me on PTC. The doctor had a bad bed side manner so I went to a family doctor. He has kept me on PTU since then and I was wondering how long do you have to be on it. Also I really think I have went to hypothyroidism but no body is listening to me. Any suggestions?