Herbal Extract
Cranberry Extract (Vaccinium macrocarpon)
Also known as: Cranberry (50:1), Vaccinium macrocarpon, Cranberry concentrate, Proanthocyanidin extract
Cranberry extract is a concentrated form of the Vaccinium macrocarpon fruit, standardized for proanthocyanidins, compounds known for urinary tract health support and antioxidant properties. The 50:1 ratio indicates significant concentration.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Cranberry Extract (Vaccinium macrocarpon) product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | Pure Encapsulations Cranberry NS | 86 A- | $0.41 |
| 2 | Pure Encapsulations Cranberry / d-Mannose | 84 A- | $1.31 |
| 3 | Pure Encapsulations Women's Nutrients | 83 A- | $0.27 |
| 4 | Garden of Life Dr. Formulated Probiotics Urinary Tract+ | 83 A- | $1.19 |
| 5 | Garden of Life Dr. Formulated Probiotics Prostate+ | 83 A- | $1.19 |
| 6 | Pure Encapsulations Women's Nutrients 40+ | 83 A- | $1.32 |
| 7 | Pure Encapsulations Women's Pure Pack | 80 A- | $3.20 |
| 8 | Pure Encapsulations Poly-Prebiotic powder | 79 B+ | $1.47 |
| 9 | Pure Encapsulations Acai 600 | 79 B+ | $0.37 |
| 10 | NOW Foods EVE Tablets | 76 B+ | $0.65 |
| 11 | Herb Pharm Cranberry | 76 B+ | $0.11 |
| 12 | Nutricost BCAA for Women | 75 B+ | $0.70 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much Cranberry Extract (Vaccinium macrocarpon) should I take?
The typical range is 300-500 mg daily (standardized to ≥30% proanthocyanidins). Consistent daily use recommended; benefits typically observed within 1-2 weeks
When should I take Cranberry Extract (Vaccinium macrocarpon)?
Once or twice daily. Can be taken with or without food; with food may reduce GI upset.
Which form of Cranberry Extract (Vaccinium macrocarpon) is best?
Extract (concentrated). Other forms in the catalog: Powder, Juice.
Is Cranberry Extract (Vaccinium macrocarpon) safe?
Commonly reported: Mild GI upset, Stomach discomfort (in sensitive individuals).
Which Cranberry Extract (Vaccinium macrocarpon) supplement scores highest?
Pure Encapsulations Cranberry NS, at 86/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- Urinary tract health
- Antioxidant support
- Uropathogenic bacteria adhesion prevention
What systematic reviews concluded
Outcomes that systematic reviews of Cranberry Extract (Vaccinium macrocarpon) reached a verdict on: 1 with a benefit, 1 with no effect, 1 with harm reported, 1 unclear. Each is quoted from a review and linked to it on PubMed. How these were read.
Reviews found a benefit (1)
“our meta-analysis demonstrates that cranberry supplementation significantly reduced the risk of developing UTIs in susceptible populations.” PMID 34473789
Reviews found no effect (1)
“Blueberry and/or cranberry supplementation had neutral effects on SBP and DBP in patients with cardiometabolic diseases, regardless of duration or age.” PMID 37963472
Harm reported (1)
“healthcare professionals should be aware of the increased risk of bleeding when taking several food and herbs. These include Chinese wolfberry, chamomile tea, cannabis, cranberry, chitosan, green tea, Ginkgo biloba, ginger, spinach, St. John's Wort, sushi and smoking tobacco.” PMID 32478963
Not enough to say: h. pylori eradication.
1 finding from reviews in specific patient groups (such as cancer, pregnancy or surgery) is not shown here.
How it works
- Proanthocyanidins inhibit bacterial adhesion to urinary epithelium
- Antioxidant and anti-inflammatory effects
- May support normal urinary function
Dosage
- Typical range
- 300-500 mg daily (standardized to ≥30% proanthocyanidins)
- Timing
- Once or twice daily
- With food
- Can be taken with or without food; with food may reduce GI upset
- Duration
- Consistent daily use recommended; benefits typically observed within 1-2 weeks
- Special populations
- Safe for long-term use; pregnancy/lactation: generally recognized as safe but consult provider; those on anticoagulants should monitor intake
Forms
- Extract (concentrated)· 70/100
- Powder· 70/100
- Juice· 70/100
Safety
Common side effects
- Mild GI upset
- Stomach discomfort (in sensitive individuals)
Contraindications
- Warfarin/anticoagulant therapy (may increase bleeding risk at very high intakes)
Products containing Cranberry Extract (Vaccinium macrocarpon)
Top-scoring supplements in our catalog that list Cranberry Extract (Vaccinium macrocarpon) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Good evidence for urinary tract health, particularly in women; multiple RCTs support proanthocyanidin-rich cranberry extracts. 50:1 concentration ensures adequate proanthocyanidin content for efficacy.
Grade B: Some human trials support key claims; further confirmation needed.
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.