I take 1 Advil PM every work night. Melatonin doesn't do shit for me. Tylenol PM makes me feel like poo the next day. Taking just 1 instead of the recommended 2 Advil PMs is just enough to make me fall asleep, but still feel fine the next day. It won't make me tired if I don't try to go to sleep, but if I lay down I'm lights out.