I usually go to bed between 7 and 8 pm. How well I sleep depends on if I take my trazodone. If I take it I can sleep through until 5 or 6 am. If not, I'm up around 2 or 3 am, am up for an hour, and then go back to sleep for a couple of hours. It definitely affects me. If I don't sleep enough I can't concentrate on work, reading, even on TV.