I was taking Neurontin for about 11/2 years at the peak was takin...

I was taking Neurontin for about 11/2 years at the peak was taking 10 tablets of 300mg each for my Trigeminal Neuralgia problem. I felt like a zombie for days ahead as it makes me tires and lighheaded , dizzy.....Worst of all after that period of time i stopped using them i discover that my i have difficulty in remembering things that was told to me a few minutes ago.....even now after almost 1year ltr off Neurontin i am still having problem with my memory...