I've been on Rebif for almost a year now. I began in July of 03. In April 03 I had had a relapse involving spasticity, gait, balance and numbness in the left leg and a little in the right leg. I had only had symptoms four years ago (optic neuritis, tingling in limbs, numbness in feet...) and then my MS went silent. It was this last attack that got me the clinically definite diagnosis. I am following the Swank diet, too. I have not had new symptoms, but have not returned to baseline from my attack April 03 either, although I have come a long way. I, too, am tolerating the Rebif well. After my first day, I haven't had side effects (except some injection site bruising/redness).