I'm on Lithium myself. I'm on a pretty high dose 1500mg daily. 900 at night, 600 in the morning. I just had my lithium levels checked and was at .4 instead of a normal treatment level of 1. It has helped with my moods and wasn't as bad as I thought it would be. But everyone is different. They will do blood tests to make sure thyroid and lithium levels are safe. After I told my primary care that I was on lithium, he started ordering blood tests as well. Unless you have a thyroid condition already I would not worry.

I think meds are good, but the effects are rough. But I still haven't found the right combo yet.