chuck and erik,
i have to second the Tranquilnite from New Chapter. It's wonderful. I used it a bit when I was having a brief bout of sleep challenges b/c of anxiety. Dh has used it on occasion, but he's currently a big fan of ambien (i'm hoping that changes once he starts dealing with this OSA).
Melatonin will work for some.....tryptophan will work for some more. Making sure dietary magnesium is sufficient may also be helpful (most do not get enough magnesium). Tryptophan cannot be taken with Rx anti-depressants.
For anyone interested, I strongly recommend the book _Depression Free Naturally_. The title is a bit narrow - it's less about depression and more about mental health in general. It's helpful for depression, anxiety, anger, irritability, some fatigue and sleep issues.
katherine