Good luck WTD, hope it works for you.
It really helped with my Dad's sleep and he swore by it for quite a while.
I don't think it's cheap to buy, so maybe try and get it from Healthspan or H &B on "buy one, get one for a penny".
Also if you get chance, try and research EPA fish oils, they are also good for depression, sleep and brain function.
Let us know how you get on.