a randomized study was conducted in patients who had measurable metastatic colorectal cancer to compare the relative efficacy and toxicities of oral tegafur ( 1 gm/m2/days 1-21 ) with those of 5-fluorouracil ( 5-fu , 500 mg/m2/days 1-4 , then 250 mg/m2 on days 6 , 8 , 10 , 12 ) .
C0016778
tegafur
C0016360
5-fu