I wish I could figure out my tiredness (besides working night shift). My synthroid dose to this day remains non-therapeutic despite an ever-increasing dose. It's in the high range of dosing now. I went to my practitioner for an endocrinologist referral, and she refused until I've had a sleep study done. I don't have sleep apnea, I work nights - that's what makes me so tired! I'm glad your levels evened out, Bethany.