Quercetin 500 mg with Zinc & Copper
by Natural Factors · capsule · 60 vegetarian capsules
- On the market (NIH)
- UPC 0 68958 01385 5
- DSLD label 282759
- Serving 1 capsule
- 60 servings
Quercetin 500 mg with Zinc & Copper by Natural Factors lists 3 ingredients, 3 with an amount per serving of 1 capsule, such as 15 mg of zinc, 1 mg of copper and 500 mg of quercetin. Its current label entered the NIH Dietary Supplement Label Database on January 23, 2023.
What is in Quercetin 500 mg with Zinc & Copper?
Each row as the label prints it, per serving of 1 capsule. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Zincas Zinc Citrate | 15 mg | 136% | Higher than 56% of 13,186 products listing zinc (median 11 mg). Per day at the most servings: 30 mg. |
| Copperas Copper Citrate | 1 mg | 111% | 40% of 6,468 products listing copper give more (median 1 mg). Per day at the most servings: 2 mg. |
| Quercetinas Sophora japonica | 500 mg | Higher than 84% of 1,548 products listing quercetin (median 100 mg). Per day at the most servings: 1,000 mg. |
Source: NIH ODS Dietary Supplement Label Database, label 282759 (entered January 23, 2023), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.
The NIH database records 2 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.
The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.
Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.
Which products have the closest formulas?
1 product lists the very same ingredients; the nearest amounts come first.
- Zinc DefensePure TheraPro Rx same ingredients
- Centurion Defender Immunity BoostCenturion 3 shared, 70% alike
- Zinc 30 mg & Quercetin 50 mgNatural Grocers by Vitamin Cottage 2 shared, 68% alike
- Zinc QuercetinVitamatic 2 shared, 68% alike
- Quercetin Dihydrate 500mg plus Zinc 25mgPuritan's Pride 2 shared, 68% alike
- Quercetin 1200 mgNutriFlair 2 shared, 57% alike
Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.
What does the label say about taking it?
Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.
- Directions
- Suggested usage: 1 capsule 2 times per day with food or as directed by a health professional.
- Warnings
- Cautions: As with any supplement, consult your health professional before use if you are pregnant, breastfeeding, or trying to conceive, or if you are taking medication, have a medical condition, or anticipate a surgery.
- Keep out of the reach of children.
- Sealed for your protection. Do not use if seal is broken.
- Allergens and what it does not contain
- Contains no artificial colors, preservatives, or sweeteners; no dairy, starch, sugar, wheat, gluten, yeast, soy, corn, egg, fish, shellfish, animal products, salt, tree nuts, or GMOs.
- Storage
- For freshness, store in a cool, dry place.
Source: label statements in DSLD label 282759.
What else is on the label?
Other ingredients: Vegetarian Capsule, Microcrystalline Cellulose, Stearic Acid, Magnesium Stearate, Silicon Dioxide.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): ISURA Non-GMO Mass Spec Documentation Lab tested.
How many labels does Quercetin 500 mg with Zinc & Copper have?
One label is on file, entered on January 23, 2023.
- Label 282759 (current) Entered January 23, 2023 · on the market · 60 vegetarian capsules · UPC 0 68958 01385 5
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Natural Factors Canada (manufacturer). All Natural Factors products.