I've been on 1200 mg a day for close to 3 years. I have a LOT of Sciatic nerve pain, so it's not one of the ones I'm trying to get off of (for now, anyway - maybe down the road.)
I haven't had any weight gain - in fact, I've had to concentrate on getting back the 5 or so pounds I lost over the past few years. I have had some spaceheadedness gain,
which I could've done without, but that might have been from something else; it's hard to separate out all the meds' influences.
Debbie