of the patients who completed the treatment courses , 13 recipients of ampicillin suffered loose or watery stools for 4 or more days , compared with 6 of the amoxicillin recipients ( p less than 0.04 ) and 5 of the tmp-smx recipients ( p less than 0.02 ) .
C0002680
ampicillin
C0002645
amoxicillin