I don't have sleep issues often, but, when I do, I like valerian too; I use the tincture in a bit of water, then wash it down with some juice or something right away
I really like kavakava as well, though if you have kidney/liver problems, it's best to try something else; and not take it for too long.
When I really need to be knocked out
I take melatonin. Only caveat is that it will knock you out, but not keep you asleep, if that's your issue. It works like a dream for me.
None of these are non-addictive.