I can't sleep without stimulants or caffeine.
with, I can get up to 6 hours of sleep, 8 if I am not feeling well. Without, I get four at best.
when I was first diagnosed the psychiatrist tried me on a dose of Ritalin, which I took at work thinking it would keep me awake and alert. I fell asleep at my desk.
and now that i have finished my big cup of tea, i am off to have a nap....