I've been on gabapentin for almost 10 yrs. When I was first diagnosed with my TN back then...I was on 3600mg/ day in addition to 2000mg/ day of Vicodin. Talk about feeling spaced-out!!!!

Was still having some breakthru attacks until neuro came up with the right "cocktail" and took me off the vicodin and added Elavil. Yes, it's known as an anti-depressant...but within 48 hrs I was totally pain free. Over the course of the next month or so, I gradually decreased the gab. until I was at a level that would just control the pain, nothing more..nothing less. I've been on 1200mg/day of the gab. for about 5 yrs now, and only needed the Elavil for about a yr.
My TN is the atypical type, the lower level constant pain..very few of the lightning shooting pains.
Marilyn