I took Gavapentin (Neurotin) 300mg, one a day for one year. I developed Involuntary eye movements, blurred and double vision, those, according to the side effects on Webmed, are three of the severe side effects of this drug. I stopped taking it three months ago. Is these in facts are problems related to this medicine, will they go away? or are these side effects permanent? Please let me know. Thanks for your help.