Are cranberry products (juice, tablets, capsules, and syrup) associated with prevention of urinary tract infections (UTIs) compared with placebo or other treatments?
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.
Jepson R, Craig J, Williams G. Cranberry Products and Prevention of Urinary Tract Infections. JAMA. 2013;310(13):1395-1396. doi:10.1001/jama.2013.277509