Cranberry products and prevention of urinary tract infections

CLINICAL QUESTION: Are cranberry products (juice, tablets, capsules, and syrup) associated with prevention of urinary tract infections (UTIs) compared with placebo or other treatments?

BOTTOM LINE: Cranberry products are not associated with prevention of UTIs. However, lack of association of cranberry products with a reduced incidence of UTIs in clinical trials may be due to lack of participant adherence, lack of sufficient active ingredient in the cranberry product, or lack of sufficient statistical power.