I too have ha trigeinal neuralgia surgery on my right side. When I awoke from the surgery, I was in the most excruciating pain. All they would give me in the hospital was tylenol. However, it has now been 15 months later, and my tongue is numb, I have blurred vision, the surgery site is still painful, and the right side of my face is still numb. Like you, I was prescribed gabapentin. I am currently taking 1200 mg twice a day. I am fatigued, have little to no appetite as I really cannot taste food. My PCP tells me it takes some time to get over this kind of surgery. I have had a number of different types of surgeries and while the surgery sites did cause some numbness.after the pain subsided, the numbness went away. I'm at a point where I think this is the best it's ever going to be. I don't know where to turn to now.