I have been taking 300mg of neurontin three times per day for the...

I have been taking 300mg of neurontin three times per day for the past 12 months due to a back injury and finally major back surgery in September 2002. I have many of the same symptoms: light headedness, swelling in knees, ankles, feet, short-term memory loss, lack of concentration and worst of all 'restless leg syndrome', severe muscle cramps from my thighs to my toes in both legs. I am really becoming concerned about these symptoms and I'm wondering if I should go off of neurontin for good. I have begun experiencing pain over my kidneys of late and I'm concerned that I may be experiencing the beginnings of kidney failure. I would appreciate any comments.