I take two Lunas and I feel rested when I wake up. My son takes one Luna and he requests it when he needs a good night's rest- when he doesn't have the time to lay in bed and fall asleep after I hectic day. I can't overemphasize how important a good night's rest is. There's no hangover feeling, no waking up over tired, and no inability to fall asleep without it as often associated with taking sleep aids. All natural substance. Fall asleep the way sleep was intended.