Gabapentin is a great tool to use to get off opiates and benzos, ESPECIALLY if you've never used it before that time, you'll feel it much more than someone who's taken it before. That's not the point I wanna make here though.
Tools are good and bad like a hammer I can build a house and smash my own face if I wanted.
I think it's great for helping withdrawals such as benzo withdrawals that I'm going through, I'm taking 300-900 mgs a day tops and never for more than 2 days straight.
I've posted here a thread during the time I went through my severed gaba withdrawal after a year of daily 900-1800 mgs gaba.
Here's the link to my timeline and how I felt
http://www.bluelight.org/vb/threads/813382-Gabapentin-withdrawal