Hello comic! Did you just start up on them? I was on 10 mg Zyprexa. That made me sleep about 2 to 3 hours more each night (i.e. 12 hours). It took some time for my sleep levels to stabilize on that level. Now I'm on 2.5 mg Zyprexa and don't know yet how much that will make me sleep, but currently I sleep about 11 hours. This night and the one before I slept >8, and I started on 2.5 mg a week ago.