I started off slow with Gabapentin about 18 months ago and now take 1800mg, 300mg in am, 600 in pm & 900 before bed. At this point, I don't want to stop for fear of the pain getting worse. The max dose for seizures is 3600mg. It is also prescribed for Restless Leg, which I think often accompanies the misery of PN. Does it work? Who knows. I have gained 8 lbs which at 72, will be difficult to shed. Back to strict Keto. People tell you to exercise, but just doing light housework & making myself presentable every day can be excruciating. This disease robs you of even the most simple comfort & pleasure.