insomnia
"Can't sleep like a normal person due to a circadian rhythm disorder - without this med I would get one or two hours of broken up sleep a night, total. I would probably be institutionalized or dead if it weren't for this medication. It used to make me feel groggy in the morning but I think I got used to it. I also drink strong black tea and take Adderall, which counter the side-effects almost completely. I'm not 100% functional still, because it does knock me out and leaves me slightly hungover, but it's a small price to pay to sleep mostly like a normal person where I was not sleeping at all. On a good night I get 7-8 hours and wake up once, sometimes not at all. Cutting out coffee has helped tremendously too."