I've been taking Gabapentin and Sinemet for a months. I've had double vision for about that long as well. I was sure it was from MS but the eye doctor said it wasn't. And it's been getting worse. Well, someone posted that she had double vision from the gaba so I looked up the side effects and sure enough, there it was. Can cause double vision and blurry vision. So now I guess I'll have to stop taking it and don't have any idea what else to take for the RLS. You would think my neuro would have told me, but oh no. I'm disgusted with him and am still trying to figure out what to take. Does anyone have comments or suggestions?