I currently take Effexor, Latuda, Topamax and Wellbutrin. My doc wants me to try Lithium to try to address my repeated "mixed states," but I'm really scared of it. I'm convinced I'll get kidney stones, gain weight, destroy my thyroid and develop Lithium toxicity. Am I over-thinking it? My doc says it's a safe drug and worth a try and might get me off one or more of my other drugs. I've literally tried dozens of other drugs. I welcome advice. Thank you!