I take it one 8mg in the a.m. and 2 8mg in the pm. As far as sleep I've been on so many different ones it's crazy (all the newer ones and some of the older antipsychotics) this one is the best so far. I was taking it all at night but I shake so bad by the end of the work day (I work part time but not at the moment; mono) so he put one in the morning and two at night for a total of 24mg a day. And I've actually taken 4 at once. For psych meds I am also on lithium, artane for shaking, levothyroxine which can be low thyroid function caused by lithium, valium twice a day (which my pdoc tells me that taking something scheduled actually is better than a as needed basis bc that would reinforce and cause addiction). Not sure if I answered all your questions; probly not. Just keep asking.