hey im a psychiatric nurse who also has suffered from major depression for many years..
you can check out this web site: www.mims.hcn.net.au and search olazapine/zyprexa
i have seen alot of clients on this medication and also my brother in law used to take it.. it does cause sedation and is one of its main side effects .. definately talk with your doctor cos you dont have to put up with the side effects especially if its impacting on your quality of life.. you can also check out this site for zyprexa.. its from the company that makes it..
http://www.lilly.com.au/health/medicines.cfm