Thanks a lot for reply.I also did some research,it does cause tolerance and has a withdrawal symptom profile similar to Xanax so I am going to avoid it.I am actually being tapered from Risperidone and Xanax by my Psychiatrist and am having sleep problems but I shall take Melatonin or Rozerem instead after consulting my Psychiatrist as I dont want go through another withdrawal syndrome.
It appears to be similar in efficacy and like Ambien is meant for short term use only. Unless you've tried it Rozerem is one alternative that unlike Ambien or the medication you mentioned or Lunesta does not have a potential for a person to build up a tolerance to it and is an FDA approved medication that works like melatonin to adjust the sleep cycle. You could ask your psychiatrist about that.