My stepson has degenerative discs in that area. He's been holding off on surgery, but the pain is really getting to him, although he recently started using gabapentin, and says that has really helped. I think he'll probably give in, in the not too distant future, and get the discs fused or replaced.
I was given a 'script for gabapentin. I took it once and it didn't do anything. I looked at the side effects and decided it wasn't worth using.