Immune Support, Quercetin, 500 mg, 60 Vegetarian Capsules
Product Analysis
Transparency Excellent
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Zinc (citrate) | 15 mg | 136% |
| Copper (citrate) | 1 mg | 111% |
| Quercetin (Sophora japonica) (buds) | 500 mg | ** |
Bioavailability Fair
Absorption Rating
- Zinc (citrate) Fair
- Copper (citrate) Fair
- Quercetin (Sophora japonica) (buds) Fair
Other Ingredients Excellent
Fillers & Additives
- Vegetarian Capsule (Carbohydrate Gum [Cellulose], Purified Water)
- Microcrystalline Cellulose
- Stearic Acid
- Magnesium Stearate (Vegetable Grade)
- Silicon Dioxide
Efficacy Excellent
Dosage Analysis
- Zinc (citrate) 15 mg Effective
- Copper (citrate) 1 mg Effective
- Quercetin (Sophora japonica) (buds) 500 mg Effective
Supplement Facts
| Ingredient | Amount | % Daily Value |
|---|---|---|
| Zinc (citrate) | 15 mg | 136% |
| Copper (citrate) | 1 mg | 111% |
| Quercetin (Sophora japonica) (buds) | 500 mg | ** |
Other Ingredients
Price Comparison
Price History
Tracked across major retailers. Updated periodically.
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Certifications
5 certifications
Transparency
4 claims
Violation History
5 incidents
Is Natural Factors Immune Support, Quercetin a good supplement?
Natural Factors Immune Support, Quercetin, 500 mg, 60 Vegetarian Capsules received a product quality score of 87/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 3 active ingredients Of the 5 inactive ingredients, 4 are rated safe and 0 are flagged for review. The manufacturer, Natural Factors, holds a brand trust score of 88/100 with 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project.
What are the ingredients in Natural Factors Immune Support, Quercetin?
Natural Factors Immune Support, Quercetin contains 3 active ingredients: Zinc (citrate) (15 mg), Copper (citrate) (1 mg), Quercetin (Sophora japonica) (buds) (500 mg). Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.
Is Natural Factors Immune Support, Quercetin safe to take?
Natural Factors Immune Support, Quercetin, 500 mg, 60 Vegetarian Capsules has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.
Is Natural Factors a trustworthy supplement brand?
Natural Factors receives a brand trust score of 88/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1950 and headquartered in Coquitlam, British Columbia, Canada, the company offers 390 products in their lineup. They hold 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Natural Factors has 5 historical regulatory incidents on record, which are factored into the trust score.
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