I used to take Melatonin but I found it really didn't make a difference. I take Benadryl at night now, both for my allergies and as a sleep aid. It depends on when I remember to take it - if I remember around 9, usually I'll get tired within an hour. If I take it right before I get in bed, that hour seems like it draaaags on, hehe. I know that it can sometimes have the opposite effect on people though.