Should you get an acute urinary tract infection during dosing according to preventive treatment (i.e., 1 capsule a day) you should return to the dosing for treatment (2 capsules a day for 5 days). In addition, one should be observant of whether symptoms such as fever, back pain nausea & vomiting occur which would indicate a kidney infection. In this case consult a doctor for further investigation and antibiotic treatment.