anxiety
"Very good medicine. Taking 200 to 300mg daily for anxiety, racing thoughts, poor sleep etc.  Have been on lamotrigine and risperidone for supposed BPD for years. Everything they can't get rid of, gabapentin does.  Never realized there was still so much room for improvement!  One other thing.  For me, MSG or any free glutamate sets off severe anxiety and migraines.  Some of you may have similar problem, so think about your diet too.  
For me gabapentin provides fast relief from a 'meal mistake'.  Benzodiazepines worked pretty well for me, but now that I have this, bye bye. I used to use alcohol more than I should, but now don't feel the need too."