I am allergic to Aspirin, Morphine, Codeine, Hydrocodone, Tramadol and Ibuprofen. After my last back surgery they put me on Gabapentin several times a day. Now I just take it at night to help take the edge off so I can sleep. Now I have to have a shoulder replacement in 2 weeks and they want me to see a pain management specialist because they don't know what to give me when I come home. I told them to just up the Gabapentin to several times a day. But they don't want to do that. Why not?