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At a glance
| Quick fact | Details |
|---|---|
| Scientific name | Vaccinium macrocarpon (American cranberry) |
| Key compounds | Proanthocyanidins (PACs), especially A-type PACs |
| Role in FemiCore | Herbal blend; urinary tract support |
| Amount in FemiCore | Not disclosed (part of a 350 mg blend) |
| Evidence level | Moderate certainty for recurrent UTI risk (Cochrane 2023) |
| Main cautions | Not a treatment for active UTIs; possible warfarin interaction |
What is cranberry extract?
Cranberries are small, tart berries native to North America. Cranberry extract is a concentrated form made from the fruit or juice, usually dried into a powder. Unlike juice, extracts contain little or no sugar, which makes them practical for daily use.
How cranberry may work
Cranberry’s PACs are thought to interfere with the hair-like structures that some bacteria, especially E. coli, use to attach to the lining of the urinary tract. If bacteria cannot cling to the bladder wall, they are more likely to be flushed out with urine. NIH describes this as the likely mechanism. Cranberry does not kill bacteria like an antibiotic, which is why it is used for prevention rather than treatment.
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What the research shows
The 2023 Cochrane review on cranberries for preventing urinary tract infections reached these conclusions:
| Group | Finding |
|---|---|
| Women with recurrent UTIs | Cranberry products probably reduce symptomatic, culture-verified UTIs (moderate certainty) |
| Children | Probably reduce UTIs (moderate certainty) |
| People susceptible after bladder interventions | Probably reduce UTIs (moderate certainty) |
| Elderly people in care facilities | Little or no benefit |
| Pregnant women | No meaningful reduction shown |
| Adults with bladder-emptying problems | Little or no benefit (low certainty) |
NIH’s complementary health center summarizes that cranberry may reduce the risk of recurrent UTIs, though results are inconsistent across studies and some high-risk groups do not benefit.
Important limits for FemiCore users
- It is about infections, not leaks. The evidence covers UTI prevention, not bladder control, urgency or stress leaks in women without infections.
- Dose matters. Products in studies differed in their PAC content. FemiCore does not state how much cranberry or PAC it contains, and the whole herbal blend weighs 350 mg.
- It is not a treatment. If you have symptoms of a UTI, such as burning, frequency with pain, fever or back pain, see a clinician.
Side effects
Cranberry taken by mouth is generally considered safe. NIH notes that very large amounts can cause stomach upset and diarrhea. The amount in one FemiCore capsule is small by comparison with juice servings.
Interactions
NIH reports that the evidence on whether cranberry interacts with the blood thinner warfarin is conflicting, and advises talking with a health care provider before using cranberry products if you take warfarin or any other medicine. See drug interactions.
Cranberry juice vs cranberry extract
Many women drink cranberry juice for urinary health. Juice cocktails are often diluted and sweetened, which adds sugar and calories, and the amount of PACs can vary a lot from brand to brand. Extracts in capsules avoid the sugar and are easier to take daily. The Cochrane review included both juices and tablets or capsules. The challenge with any product, including FemiCore, is knowing how much of the active compounds you are getting.
Tips if you rely on cranberry for UTI prevention
- Discuss a prevention plan with your clinician, especially if you have three or more UTIs a year.
- Choose products that state their cranberry or PAC amount.
- Keep drinking enough water during the day.
- Never use cranberry instead of seeing a clinician for UTI symptoms.
Who benefits least from cranberry
The Cochrane review found little or no benefit for elderly people living in care facilities, pregnant women, and adults whose bladders do not empty properly. If you fall into one of these groups, talk to your clinician about more effective prevention strategies.
Cranberry’s role in FemiCore
Cranberry gives FemiCore its strongest scientific link to urinary health. If your bladder symptoms are related to recurring infections, this is the ingredient most likely to be relevant. If your main issue is leaking with coughs or sneezes, cranberry is unlikely to help much. For a comparison with plain cranberry supplements, see FemiCore vs cranberry pills.
Bottom line
Cranberry is a sensible, evidence-based inclusion. Its value in FemiCore depends on a dose we cannot see. If recurrent UTIs are your main concern, ask your clinician about prevention strategies, and consider whether a product with a disclosed cranberry dose suits you better.
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Check availability & price →Paid link: we may earn a commission at no extra cost to you. Sold by the seller via BuyGoods, not by this site.
Frequently asked questions
Does cranberry cure UTIs?
No. Cranberry may lower the risk of recurrent UTIs in some women, but it is not a treatment for an active infection. See a clinician for UTI symptoms.
How much cranberry is in FemiCore?
The amount is not disclosed. Cranberry is part of a 350 mg herbal blend shared with three other botanicals.
Can I take cranberry with warfarin?
Talk to your prescriber first. NIH reports conflicting evidence about a cranberry–warfarin interaction.
Sources
Last reviewed and updated: October 20, 2026.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.