Ouch zyprexa AND lithium two extremely potent drugs. If they are harming you physically they shoud consider an alterntive treatment package. I overdosed on zyprexa and asked for a new med and by a stroke of luck it worked and has done for eight years. But obviously please dont resort to an OD. Zyprexa isnt supposed to be used longterm, well no anti-psychotic is.
You need a change but i do not know how it works in the u.s. the system