Gabapentin
"Has been very helpful. However, I have experienced some side effects. I have had some problems with chest pain. After a heart cath, which was normal, I was started on metoprolol. No further cp. Also have problems with memory loss and an inability to focus, however was on lyrica for a while and was this was much worse then.  Does eliminate all my pain but Overall, this is the only medication that has helped with the rsd at all."