English version in progress: interface and data are in English; some explanatory text is still in Chinese.
Quercetin 300
Allergy Research Group · United States · capsule · 60 Vegetarian Capsule(s)
Per day
Who's behind it
Company Allergy Research Group LLC · United States group_owner unverified [source]
- Ultimate owner WM Partners unverified [source]
Label source：US NIH DSLD · NIH ODS Dietary Supplement Label Database (DSLD) API v9 · US Government work (public domain) · 2026-10-26
Label ingredients (per serving)
| Ingredient | Label value | Cleaned | Data check |
|---|---|---|---|
| Vitamin C Ascorbic Acid |
150 mg | 150 mg | ok |
| Vitamin E DL-Alpha-Tocopheryl Acetate |
140 IU | 63 mg | ok |
| Quercetin | 600 mg | 600 mg | ok |
| Hydroxypropyl Methylcellulose | — | — | |
| Microcrystalline Cellulose | — | — | |
| Silicon Dioxide | — | — | |
| L-Leucine | — | — |
Label data from official national databases and brand websites, as declared; not lab-verified.
For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.