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Head-to-head evidence comparison — which supplement is right for you?
Quercetin wins 1 of 3 categories. Both are solid choices — the best pick depends on your specific goals.
Verdict
Likely helps
8 of 11 studies with measurable effects showed benefit.
Top outcomes
Verdict
Likely helps
13 of 14 studies with measurable effects showed benefit.
Top outcomes
36mg PACs (proanthocyanidins) or 400-500mg extract standardized to PAC content
Morning and evening, With or without food
Extract standardized to 36mg PACs (A-type)
500-1000mg
With meals containing fat, Split into 2 doses
Quercetin phytosome (improved absorption)
Ongoing
2-4 weeks
2-4 weeks
4-8 weeks
Cranberries for preventing urinary tract infections
Cochrane Database of Systematic Reviews (2023) · Systematic review · n=8857
Fifth update of the Cochrane review; 50 included studies with 8857 randomised participants.
Consumption of cranberry as adjuvant therapy for urinary tract infections in susceptible populations: A systematic review and meta-analysis with trial sequential analysis
PloS one (2021) · Meta analysis · n=3979
Meta-analysis of 23 trials with 3979 participants.
Supplementation with Highly Standardized Cranberry Extract Phytosome Achieved the Modulation of Urinary Tract Infection Episodes in Diabetic Postmenopausal Women Taking SGLT-2 Inhibitors: A RCT Study
Nutrients (2024) · Rct
Considering UTI episodes, during the six-month supplementation period, an increase of 1.321 (95% CI: -0.322; 2.9650) was observed in the placebo group, while it remained at a steady value of 0.393 (95% CI: -4.230; 5.016) in the supplemented group.
Quercetin as a therapeutic agent for skin problems: a systematic review and meta-analysis on antioxidant effects, oxidative stress, inflammation, wound healing, hyperpigmentation, aging, and skin cancer
Naunyn-Schmiedeberg's archives of pharmacology (2025) · Meta analysis · n=1398
Furthermore, quercetin significantly inhibited tyrosinase activity (Z-score, 1.95), resulting in a significantly reduced melanin content (Z-score, 2.56).
Efficacy and safety of dietary polyphenol supplements for COPD: a systematic review and meta-analysis
Frontiers in immunology (2025) · Meta analysis · n=894
This systematic review confirms that the efficacy of dietary polyphenols is significantly composition-specific.
Safety and efficacy of antioxidant therapy in children and adolescents with attention deficit hyperactivity disorder: A systematic review and network meta-analysis
PloS one (2024) · Meta analysis · n=3650
The rankings of safety and efficacy of the 12 antioxidants vary.
Based on multiple RCTs showing UTI reduction in women. Effect size varies significantly between studies (15-73% reduction). Most effective for recurrent UTI prevention. PAC-standardized extracts preferred over juice forms for consistent dosing and reduced GI effects.
Meta-analysis of 896 subjects showed modest reductions in systolic (-3.09 mmHg) and diastolic (-2.86 mmHg) BP. Effect size is small and bioavailability varies significantly by form.
AI-estimated from published studies. Interpret as directional guidance.
Quercetin has a higher evidence score (6/10 vs 6/10) and wins in 1 of 3 categories.
For support immune system, Cranberry Extract has a higher relevance score (85 vs 75).
No known interactions between Cranberry Extract and Quercetin have been documented in our database. However, always consult a healthcare provider before combining supplements.