Trazodone
"Trazodone has taken away my fibromyalgia almost entirely.  I started at 50 mg/night and gradually over the 12 years got up to 150 mg.

My one problem with it had been an addictive appetite for sugar, which has now gone away completely by taking Pristiq as my anti-depressant! When I cut the dose in half, I got terrible fibromyalgia back. It also greatly helps my sleep."