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SCORE
Quercetin
Anti-inflammatory · Antiviral · Longevity
Tier 3 — Trending
What it is
A plant compound with impressive antioxidant and antiviral activity in lab studies, but poor real-world results. NCCIH notes that only about 1% is absorbed in its basic form, so the impressive lab results don't reliably translate to actual benefits. The phytosome form absorbs better. Human trial evidence remains weak and inconsistent overall.
Efficacy
2/5
Safety
4/5
Research
2/5
Onset
2/5
Cost
3/5
Drug-int.
4/5
Dose
500–1,000 mg/day quercetin phytosome for improved absorption; evidence base insufficient
Time of day & tips
Take with a meal containing fat for best absorption of the phytosome form. Can be taken at any time of day. No major drug interactions, but evidence base remains limited.
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