Can a single tablet of Sulfatrim DS taken to prevent a urinary tract infection before a catheter is removed cause side effects such as diarrhea?

Hello,While the occurrence of side effects (such as diarrhea) is not impossible after a single pill, it is unlikely. In fact, the occurrence of diarrhea after taking an antibiotic is related to the impact of the antibiotic on the bacterial flora of the gut. One tablet affects the flora much less than a week's worth of tablets.So I wouldn't worry about this situation, especially since if you don't take the tablet for fear of side effects, and you end up developing an infection, you'll end up with at least a week's worth of antibiotics.Good day,Alexandre Chagnon, Pharmacy