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Alternative medicine
By Mayo Clinic staff
Cranberry juice
There's some indication, though it hasn't been proved, that cranberry juice may have infection-fighting properties and drinking it daily may help prevent urinary tract infections. Studies have shown the greatest effect in women who have frequent UTIs. Studies involving children and older adults have had mixed results.
It's not clear how much cranberry juice you'd need to drink or how often you'd need to drink it to have an effect.
If you enjoy drinking cranberry juice and feel it helps you prevent UTIs, there's little harm in continuing to drink it, but watch the calories. For most people, drinking cranberry juice is safe, but some people report an upset stomach or diarrhea.
However, don't drink cranberry juice if you're taking the blood-thinning medication warfarin, because this may lead to bleeding.
- Wein AJ, et al. Campbell-Walsh Urology. 10th ed. Philadelphia, Pa.: Saunders Elsevier; 2012. http://www.mdconsult.com/das/book/body/208746819-6/0/1445/0.html. Accessed July 19, 2012.
- Urinary tract infection in adults. National Kidney and Urologic Diseases Information Clearinghouse. http://kidney.niddk.nih.gov/KUDiseases/pubs/utiadult/index.aspx. Accessed July 19, 2012.
- Lentz GM, et al. Comprehensive Gynecology. 6th ed. Philadelphia, Pa.: Mosby Elsevier; 2012. http://www.mdconsult.com/books/linkTo?type=bookPage&isbn=978-0-323-06986-1&eid=4-u1.0-B978-0-323-06986-1..C2009-0-48752-X--TOP. Accessed July 19, 2012.
- Urinary tract infections in children. American Urological Association Foundation. http://www.urologyhealth.org/urology/index.cfm?article=46. Accessed July 19, 2012.
- McPherson RA, et al. Henry's Clinical Diagnosis and Management by Laboratory Methods. 22nd ed. Philadelphia, Pa.: Saunders Elsevier; 2011. http://www.mdconsult.com/das/book/body/208746819-6/0/1393/0.html. Accessed July 19, 2012.
- Hooton TM. Recurrent urinary tract infection in women. http://www.uptodate.com/index. Accessed July 19, 2012.
- Wang CH, et al. Cranberry-containing products for prevention of urinary tract infections in susceptible populations. Archives of Internal Medicine. 2012;172:988.
- Cranberry. Natural Medicines Comprehensive Database. http://www.naturaldatabase.com. Accessed July 19, 2012.
- Jepson RG, et al. Cranberries for preventing urinary tract infections. Cochrane Database of Systematic Reviews. http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD001321.pub4/abstract. Accessed July 31, 2012.
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