I take 175mcgs for a non-working thyroid. My doctor suspects I had hashimoto's disease. The few months prior to when I finally went to a Dr. and got diagnosed were very rough, I felt like a 95 year old in a 27 year olds body. Doctor said I was very close to myxedema coma and heart failure by the time I saw him.

Best of luck to you. It's amazing the kind of havoc a small gland can cause.