Ambien is highly addictive and should be used sparingly.  In my case it was effective in helping me sleep, but it would also induce strange nocturnal behaviors, including sleepwalking.  I would often wake up the next day and find things half eaten in the refrigerator, things I did not remember eating (I live alone and nobody else could have eaten them).  My doctor has stopped prescribing all sleep aids.

So now I take cetirizine HCL which is available in any pharmacy over the counter.  It works pretty well and I am able to sleep for long stretches while using it.

I use temazapan as needed.  I had a problem with ambien with my j-pouch.  I needed to use the restroom more at night than before I had the surgeries.  I would fall asleep on the toilet and had a bad fall from it.  I woke up when my head hit the tile floor.  If you don't have a problem with it now I don't see how it would be different.  Hopefully you won't need to get up as often but in the beginning you will be going to the restroom more often than with a trained j-pouch.

I use melatonin but I also have odd dreams when using it. 

I use it and I am fine.