I’ll say that I personally have not gained weight in the 6+ years I’ve been on Gabapentin. I’m thinking it’s possible I may have gained a few initially, but taking the Gapabentin coincided with my sudden crippling by PN and complete cessation of all the sports and exercises that were a big part of my life up til then. So my body was readjusting to a decrease in activity at the same time. Today I am 30 lbs lighter than I was 6 years ago, and I know it’s not because of Physical Therapy… pretty sure it shouldn’t be because of the Gabapentin. I think it’s just another example of how we all respond differently to meds, and how all of this is so convoluted with everything else in our medical histories and life styles. I do everything Kim mentioned above with things we can control, especially keeping the Gabapentin on a consistent schedule or else it takes time to regulate maximal comfort again.