Probiotics for Urinary Tract Infections

Please note that each trial is not described in detail. In some trials, drugs, prebiotics and/or additional nutrients were provided that may help the beneficial bacteria be more effective. Also the setting, procedure, and dose for each trial are rarely similar. For more details, search for the reference in Google to find the original publication. The simplest way is to copy and paste the title.

The entrance of adherent bacteria into the urinary tract causes urinary tract infections (UTIs). If they are not properly controlled the infection can spread to the bladder and the kidneys. Probiotics for urinary tract infections could possibly help prevent this cycle of events by limiting the growth of these bacteria and stimulating the immune system. In this single study, women with recurrent UTIs were given intravaginal probiotics daily for several months.

Probiotic SupplementsImprovements Seen in TrialReferences
L. crispatusReduction recurrent UTI1

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment.


1.         Stapleton, A. E. A.-Y., M.; Hooton, T. M.; Fredricks, D. N.; Roberts, P. L.; Czaja, C. A.; Yarova-Yarovaya, Y.; Fiedler, T.; Cox, M.; Stamm, W. E. 2011. Randomized, placebo-controlled phase 2 trial of a Lactobacillus crispatus probiotic given intravaginally for prevention of recurrent urinary tract infection. Clin Infect Dis 52:1212-1217.