Lu Ann;
you should really have you Onc. Call the manufacturer or check the web page. In the new xeloda brochure the recommended dose is only 1250mg twice daily eg. total daily load of 2500mg. They have found that 4000 is too high and will after a few weeks have nasty side effects. They have been trying to get the word out to the Drs. The 2500 works just as well as the 4000 mg/day.
I have attached a PDF for you to print out. I got it off the web at
www.xeloda.com