I've been on Lithium for 5 years now, and I'm doing fine. There have been times where my side-effects get out of control, and my pdoc will lower my dose. Make sure to stay on top of your pdoc about ordering blood work periodically (I'd say once every couple or few months?) to make sure your Lithium level is okay. I can't take a high dose of it because of the side effects, but in combination with all my other meds, it is great.