Quercetin 500 mg with Zinc & Copper®
Other CombinationsBrand: Natural Factors
Functions
Net Contents
60 Vegetarian Capsule(s)
Serving Size
1 Capsule(s)
Servings Per Container
60
Supplement Form
Capsule
Bar Code (UPC/SKU)
0 68958 01385 5
Product Version
ITEM # 058832 R0
Label Analysis
Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.
3 distinct active ingredients are disclosed in Supplement Facts.
Every active ingredient discloses a specific amount per serving.
2 ingredients report a %DV; 2 meet or exceed 100% DV.
Label states: Vegan, Vegetarian, Non-GMO, Gluten-Free.
This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.
Allergen Guide
Contains
- Egg
- Fish
- Shellfish
- Tree Nuts
- Wheat
- Soy
- Gluten
Free From
- Milk
Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.
Supplement Facts
Serving Size: 1 Capsule(s) · 2 per day
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Zinc(Zinc Citrate) | 15 mg | 136% |
| Copper(Copper Citrate) | 1 mg | 111% |
| Quercetin(Sophora japonica) | 500 mg | — |
Not Present
Other Ingredients
Target Groups
Label Claims
Directions & Suggested Use
Suggested/Recommended/Usage/Directions
Suggested usage: 1 capsule 2 times per day with food or as directed by a health professional.
Warnings & Precautions
Precautions re: Pregnant or Nursing or Prescription Medications
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.
Precautions re: Children
Keep out of the reach of children.
Precautions re: All Other
Sealed for your protection. Do not use if seal is broken.
Storage
Storage
For freshness, store in a cool, dry place.
Formulation
Formulation re: Other
Quercetin is one of the most well-known antioxidant bioflavonoids. A free radical scavenger, quercetin helps support healthy sinus, respiratory, cardiovascular, and immune system function.
Formula re: Contains
With zinc and copper for added immune support.
Formulation re: Other
Manufactured by Natural Factors to ensure safety and potency in accordance with Good Manufacturing Practices (GMP) of the FDA and Health Canada.
Formulation re: 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.
Formulation re: Vegetarian/Vegan
Suitable for vegetarians/vegans.
Formulation re: Other
Product of Canada
Formulation re: Other
Immune support
FDA Statements
FDA Disclaimer Statement
This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
FDA Statement of Identity
Dietary Supplement
Other Label Statements
Seals/Symbols
ISURA Non-GMO Mass Spec Documentation Lab tested
General Statements: All Other Content
Recyclable container and label.
Brand IP Statement(s) re: (c), (TM), (SM)
Isura is a registered trademark of ISURA.
Manufacturer & Distributor
Manufacturer
Natural Factors Canada
Distributor
Natural Factors
14224 167th Avenue SE, Monroe, WA, 98272
Market Reference
Natural Factors Quercetin with Zinc and Copper
Vitacost.com4.8(1400)$23.07Natural Factors Quercetin 500 mg
Vitacost.com4.8(710)$19.57Natural Factors C Extra + Quercetin
Walmart - Pattern4.8(397)$13.97Natural Factors Quercetin 500mg with Zinc & Copper
Win in Health4.9(10)$18.83Natural Factors Quercetin 500 mg 60 Vegetarian Capsules
St. James Nutrition$23.76Natural Factors Quercetin LipoMicel Matrix 30 Softgels
Instacart4.9(29)$18.99Natural Factors Quercetin LipoMicel Matrix
The Healthy Place4.8(2400)$38.49Quercetin 500 Mg W/ZINC&COPPER
Evergreen Nutrition$32.95
Where to Buy Locally
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NutriLx Store
4.9 (135)Vitamin & supplements store
Loja 1 dentro da Estação Metro Campo Pequeno, Av. da República 63B, 1050-189 Lisboa
Fontexplode (Odivelas)
4.9 (15)Vitamin & supplements store
Centro Comercial Oceano, Av. Dom Dinis 68-A Loja 13, 2675-328 Odivelas
PrimeBody (Arroios)
4.9 (194)Vitamin & supplements store
R. Passos Manuel 83B, 1150-258 Lisboa
PrimeBody Nutrishop - Bela Vista
4.9 (185)Vitamin & supplements store
Avenida Francisco Salgado Zenha, 12,, Centro Comercial Pingo Doce da Bela Vista, 1900-238 Lisboa
My Formula - Suplementação Personalizada
5.0 (47)Vitamin & supplements store
R. David de Sousa 27B, 1000-246 Lisboa
BodyFuel Wellness Store
5.0 (2)Vitamin & supplements store
Av. da Peregrinação 2, 1990-382 Lisboa
nutry4ALL
4.2 (27)Vitamin & supplements store
Av. Duque de Loulé 45 A, 1050-086 Lisboa
Corposflex
5.0 (66)Vitamin & supplements store
PCT do Lagar 2650, Amadora
Research & Studies
Complexation of bioelements and toxic metals by polyphenolic compounds–implications for health
S Borowska, MM Brzoska, M Tomczyk - Current drug targets, 2018 - benthamdirect.com
… Zn at the 3-OH-4-CO site [60]. The energetically preferred Zn chelation sites in the structure of quercetin … Only a small portion (0.173%) of the administered dose of curcumin (500 mg/kg …
201876 citationsDevelopment of Iron-Chelating/Antioxidant Nutraceuticals and Natural Products as Pharmaceuticals for Clinical Use in Diseases with Free Radical …
GJ Kontoghiorghes - Nutrients, 2025 - pmc.ncbi.nlm.nih.gov
… are health benefits obtained from the use of natural antioxidants… -ion formulations including iron, copper, or zinc, as well as food … patients who received 500 mg of quercetin per day for 2 …
20257 citationsWhy Quercetin and Zinc Work Better Together
W Maish - superpower.com
… Monitoring copper status is important for anyone taking zinc … a healthcare provider before using quercetin supplements, as … use, 15 to 30 mg of zinc paired with 500 mg of quercetin in a …
Effect of micronutrient malnutrition on periodontal disease and periodontal therapy
H Dommisch, D Kuzmanova, D Jönsson… - Periodontology …, 2018 - Wiley Online Library
… between periodontal health and serum magnesium levels. … for some enzymes such as copper-zinc superoxide dismutase. It … of quercetin, 25 mg of citrus bioflavonoids, and 6 mg of beta-…
2018227 citationsEffects of multivitamin, multimineral and phytonutrient supplementation on nutrient status and biomarkers of heart health risk in a russian population: A …
VA Isakov, AA Bogdanova, VV Bessonov, TB Sentsova… - Nutrients, 2018 - mdpi.com
… folate, Zinc and Selenium were measured at baseline and on Days 28 and 56, and quercetin was … calcium, 5.0 mg iron, 37.5 μg iodine, 6 mg zinc, 0.75 mg copper, 1 mg manganese, 55 …
201839 citationsBiosafety of flavonoids in rats: effects on copper and zinc homeostasis and interaction with low-level pesticide exposure
FN Bebe, M Panemangalore - Biological trace element research, 2009 - Springer
… study, quercetin and catechin could have had a larger impact on zinc and copper metabolism than … Our results also highlight the importance of determining the safety and adverse health …
200910 citations
Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2023-01-23. DSLD Label ID: 282759. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.
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