Best Quercetin for Immune
Top 5 products ranked
Last reviewed May 2026
Clinical dose: 500–1000 mg
Why Quercetin for Immune
Quercetin plays a supporting role in immune. Quercetin is a flavonoid found in onions, apples, and berries. A 2020 meta-analysis (9 RCTs, 781 participants) found quercetin supplementation significantly reduced CRP, IL-6, and TNF-alpha, supporting anti-inflammatory effects.
What dose to look for
Clinical studies typically use 500–1000 mg of quercetin. RCTs typically use 500–1000 mg/day. Phytosome forms may be effective at lower doses due to enhanced absorption. Products below this range may not deliver meaningful results.
What the research says
Quercetin has moderate clinical evidence for immune benefits. Meta-analyses of 9+ trials show reduced inflammatory markers and blood pressure at 500+mg/day Learn more
Naka Platinum
Bioactive Multi for Women, 120 Veggie Caps
10 mg
California Gold Nutrition
Daily Multivitamins
phosphatidylcholine · 15 mg
Life Extension
Two-Per-Day Multivitamin, V2, 120 Tablets
5 mg
Life Extension
Two-Per-Day Multivitamin, 120 Tablets
phosphatidylcholine · 15 mg
NOW
Clinical Strength Prostate Health
200 mg