English version in progress: interface and data are in English; some explanatory text is still in Chinese.
Quercetin
Full ranking Dose tool Products (1,006)
Key facts
Daily Value (US FDA)—
Tolerable Upper Intake Level (UL)— Authoritative daily maximum: 600 mg
Median（Per day）200 mgP5 5 – P95 1,000
Products1,006
Sources: https://webprod.hc-sc.gc.ca/nhpid-bdipsn/atReq?atid=quercetin2&lang=eng · Health Canada NNHPD monograph: max 1,200 mg/day and 600 mg per single dose
Daily dose across products（mg/day）
Authoritative daily maximum 600
1.3 mglog scale · n=1,0063,000 mg
Label data from official national databases and brand websites, as declared; not lab-verified.
Top ranked
| Rank | Brand | Product | Per day | Score |
|---|---|---|---|---|
| 1 | Quantum Health | Quercetin + | 500 mg | 90.0 |
| 1 | Designs for Health | Quercetin + Nettles | 600 mg | 90.0 |
| 1 | Solaray | Quercetin 500 mg | 500 mg | 90.0 |
| 1 | MegaFood | Quercetin Strength | 500 mg | 90.0 |
| 1 | The Vitamin Shoppe | Quercetin with Bromelain | 250 mg | 90.0 |
For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.