I've been taking Gabapenting (1500mg a day) for less than a year. I gained about 25 pounds, which totally crept up on me. I have been tapering off for 5 weeks and I have completely off it for 7 days. I eat pretty healthy and I exercise a lot, I was in great shape before starting this drug. I haven't lost any of the weight I gained yet and I am getting very upset. Has anyone else experienced this?? How long did it take for you to lose the weight you gained from Gabapentin?