It was originally prescribed to treat fibromyalgia and found at the proper dose it also treated yet another disorder, ptsd and depression as im unable to take antidepressants, Ambien, has been a life saver for me. The generic form made by Tiva that has been prescribed does not work, so have been off the ambien now for 3 months. I appear to have relapsed but because its also listed as a withdrawl (depression) as well as my ptsd, and the reason I was taking it is not listed as one of its uses. Insurance is refusing to pay for nothing but the Tiva. How long and how much worse will these withdrawls be? Although what I'm experiencing is one of the reasons i remained on the medication as a treatment for. Please help. With each passing day I become less functional, any suggestions? Thank you. Diana Elledge