A daily dose of cranberries — 500 mg of cranberry tablets or 8 ounces of juice — could, potentially, reduce the risk of recurrent urinary tract infections (aka UTIs, or bladder infections). But the evidence of their effectiveness is limited and inconclusive. Cranberries do contain compounds called proanthocyanidins (PACs), which are believed to hinder bacteria from sticking to the lining of the urinary tract. However, the amount of PACs in juices and tablets varies widely.

Cranberry products are generally safe, but in large amounts, can upset the stomach. If you drink cranberry juice, opt for an unsweetened or low-sugar juice; high-sugar drinks, like cranberry juice cocktail, can increase rather than decrease UTI risk. Cranberries also may interact with warfarin, so if you’re on this blood thinner, talk with your provider before using cranberry products.

More ways to prevent or relieve UTI symptoms

Other products may relieve symptoms, but they shouldn’t be used regularly, as they can mask symptoms and delay treatment. If you have a history of kidney impairment or liver failure, talk to your provider before using these:

• Phenazopyridine (AZO): this can be taken three times a day for up to two days to relieve the pain, burning and urinary urgency of a UTI.
• Tylenol or ibuprofen: take as directed to relieve pain.

For prevention, these measures also may help:

• Stay well hydrated (this may relieve symptoms and speed recovery, too).
• Urinate before and after sexual contact.
• Take showers instead of baths.
• If you use a spermicide for contraception, consider a different method.

Cranberries are not a cure — your team is here to help

While cranberries and other measures may help prevent UTIs, they can’t cure them. If you think you have a UTI, it’s important to contact your health care team. Your provider can analyze a urine sample to identify the bacteria and prescribe the right antibiotics. For treatment to be effective, you must complete the full course of antibiotics, even if the infection feels like it’s gone.

If you have 2-3 UTIs per year, talk to your team at The Portland Clinic. Our pharmacists can work with you and your provider to help optimize medications to reduce UTIs and improve your overall urinary health. Learn more about UTI treatments.

This information refers to uncomplicated UTIs only. If you have kidney pain, use a catheter, are pregnant, or have urinary tract abnormalities or a compromised immune system, talk to your health care provider.