I take Knock-Out too. Within 1/2 hour, i'm falling asleep. So now my problem is not falling asleep, but staying asleep. I normally wake up 3 to 3:30, and usually can't go back to sleep. But I do hit the hay no later than 9PM, so that's still 6-ish hours of sleep.

So, try Knock-Out (I also take St. John's Wort). It's the stinky valerian root in it that does the job. And holy cow, does it STINK. I hold my breath before it even gets near my mouth. But it works - just as well as my Ambien (which I don't need to take now).