Hi, I'm 24 & suffer badly from bipolar 1 disorder, my phycyatrist has struggled to get the right medication for me & is now trying me on lithium & olanzapine (10mgs) starting this evening (12/04/16) in was told to take it early as possible as it has a horrible sleepy side affect & I need to be up to get my 5 year old to school in the morning. I took my medication around 8.30pm & I'm still wide awake & buzzing (going through a mania) I understand that olanzapine is a sedative, surely I should be sound asleep by now? How long should it normally take?