I have been on it for five years. I have severe pain and weakness, hereditary neuropathy, so it is not my only pain medication. It helps with the burning and electrical zapping feeling, and it helps me sleep. I am on 600 mg. x 3.
I have not had the weight gain or brain fog that many experience, but I have had some blurring of my vision, for me the benefits outweigh the drawbacks. I do notice if I miss a dose. Many people have trouble with it.
Are your symptoms more than a nuisance? If not, you may want to put this one off for now.

Just read your other posts- if you are experiencing pain rather than burning Gabapentin may not offer any relief.