Did not work at all for me, we had to give up after 8 weeks, even with an increased dose. It did put me to sleep the first week, but that effect wore off.
Never give up though because i found an antidepressant that worked for me brilliantly and i had a very full recovery. Get well soon.
I have never taken it but I had a friend who had severe PTSD from a deployment and it workedd wonderfully. Until they put him on that he was getting maybe 2 hours sleep a night,