Lithium is for mood stability and can be added with an anti convulsant such as lamictal for those who suffer from bipolar disorder. It's usually a good combination for someone that does nto need an antipsychotic, but I've seen people on all three. I was going to go on lithium and lamictal, but once I was truthful about my hallucinations my old pdoc said lithium may not work well for me and to not bother trying which is what I was okay with.