Quercetin
Quercetin is a moderate-risk supplement, commonly taken at 500 mg per day with a suggested upper limit of 1000 mg according to EFSA reference data. This page currently includes one reference source. Treat it as safety context, not a complete global standard comparison. It has 1 known interaction with other supplements including vitamin c. Use NutriAudit to check if your supplement stack keeps this ingredient within safe limits.
Quick take
Quercetin sits in the Antioxidants category. This page consolidates 1 regional standard, and the numbers are broadly aligned, so the bigger question is whether your total dose stays in range.
It also has 1 known interaction, so the question is not just the label dose but whether the rest of your stack adds extra risk.
Taking multiple supplements? Check Quercetin for overlap
If Quercetin appears on two product labels, enter each daily amount and check the combined label total.
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Regional Reference Values
| Region | Organization | Typical Dose | Upper Limit (UL) | Unit |
|---|---|---|---|---|
| 🇪🇺 Europe | Research | 500 | 1000 | mg |
Typical Dose = commonly used amount, not an official RDA. UL = Tolerable Upper Intake Level; some authorities have not established one.
Known Interactions
Vitamin C enhances quercetin absorption (positive interaction).
Taking quercetin with vitamin C is beneficial.
How to use this page
First match your product label against the dose table above, then check whether the known interaction list includes anything in your current stack.
If you are taking multiple supplements, the safest approach is usually to audit the whole stack instead of judging a single bottle in isolation.
Frequently Asked Questions
How much Quercetin is too much?
Research lists a formal upper limit (UL) of 1000mg per day for Quercetin. Other regions may use a different value or have no established UL.
What is a typical dose of Quercetin?
A commonly used dose of Quercetin is 500mg per day. This is based on research literature, not an official RDA. Individual needs vary.
Does Quercetin interact with other supplements?
Yes, Quercetin has 1 known interaction with other supplements. Vitamin C enhances quercetin absorption (positive interaction).
Are you taking Quercetin?
Check if your supplement stack keeps Quercetin within safe limits.
Audit My SupplementsDisclaimer: NutriAudit is a decision-support tool designed to help you review your supplement stack for potential duplicate, conflicting, or excessive ingredients. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making changes to your supplement routine, especially if you are pregnant, nursing, taking medications, or have a medical condition.
Uses cited public reference data where the current dataset has a verified entry.