Recently, doctors changed my levothyroxine pill from .125 to .75. I have lost 25 lbs this year. Is this normal? My hair is falling out now, mildly. I've had my thyroid medicine changed before, and my hair fell out in clumps I swear! I was in the hospital when it changed. Should I see an endocrinologist for my thyroid? I've had this problem 25 years, and never seen an endocrinologist. Perhaps it's time to start. Any thoughts?