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Objective: To determine the effectiveness of cranberry juice consumption as prophylaxis for urinary tract infection (UTI) in women with a history of recurrent UTI. Methods: Systematic literature review using Google Scholar with search terms “cranberry juice prophylaxis.” Results: Our search resulted in three randomized-control trials (RCTs), two of which demonstrated no benefit of cranberry juice in preventing recurrent UTI. Conclusion: Because of the significant heterogeneity among published studies, there is no definitive proof that cranberry juice is effective or useless as UTI prophylaxis.
Mezaache HY, Trawick DS. Cranberry juice vs. placebo as prophylaxis for recurrent urinary tract infection in adult women: A systematic review. JMU Scholarly Commons Physician Assistant Capstones. http://commons.lib.jmu.edu/pacapstones/29. Published May 16, 2017.