I've been on gabapentin since 2010? I went off it in 2013 to get pregnant and it was 24/7 panic until I ended up in the psych ward back on all my meds. I've been on as much at 2400 mg, but right now I take 200 mg in the AM and 1200 mg in the PM. Seems to work for the most part. Sometimes I still need to take a kpin here and there.