Any experience? Lately I've found that for me, an effective dose is 0.4 mg or so - 1/6 to 1/8 of a 3 mg tablet. More than that gives no longer sleep but does cause bizarre dreams and post-awakening disorientation or what approaches a state of depression. Less than that I don't know, because these tablets don't easily break up smaller than 1/8. What happens: a pleasant drowsiness about an hour after ingestion. If I go to sleep then, I get 5-6 hours of rest, no matter where I've gone or whether I'm full of caffeine (without it, coffee-tea-chocolate gives me the jumps); I wake up slightly drowsy, but it's easy to shake that off.