A few years ago after taking sinemet I developed paralyzingly painful leg cramps and lower back cramps - went off the med and pain stopped. Dr. said it couldn't be from sinemet but that was the only thing new I was taking. I had been on the meds 5 months when cramping began. Am now on neurotin for about a month - 100 mg about 5 p.m. - 200 mg about 9 p.m. and have had severe muscle cramps first on one side of my back, now the other. Could this be from the neurotin?