Been on Levoxyl dose of 88mcg, for about 9 months. No problem at first. got rid of my symptoms of being extremely tired(all of a sudden, usually high energy person) and cranky. Now though, I have had a weight gain of almost 8 pounds (a lot for me). My hair has fallen out, and irritable. Going to call my doctor and get my levels checked. Something has changed. Get back to you.