Nature's Bounty Quercetin With Ester-C, 500 mg, 60 Capsules supplement bottle
Nature's Bounty

Quercetin With Ester-C, 500 mg, 60 Capsules

What We Researched
10 active ingredients analyzed · 5 inactive ingredients decoded · 6 brand certifications checked · 1 retailer compared · Last updated: Mar 2026
76
Product Score Fair
86
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as Ester-C®, Calcium Ascorbate) 500 mg 556%
Calcium (as Ester-C®, Calcium Ascorbate) 50 mg 4%
Quercetin 500 mg *
Bromelain 50 mg *
Citrus Bioflavonoid Complex (2,000 GDU/g) 50 mg *
Rose Hips (fruit) 50 mg *
Acerola Extract (berry) 50 mg *
Rutin 10 mg *
Bioavailability Very Good

Absorption Rating

  • Vitamin C (as Ester-C®, Calcium Ascorbate) Good
  • Calcium (as Ester-C®, Calcium Ascorbate) Good
  • Quercetin Fair
  • Bromelain Good
  • Rose Hips (fruit) Fair
  • Acerola Extract (berry) Good
  • Rutin Fair
Other Ingredients Excellent

Fillers & Additives

  • Vegetable Cellulose
  • Maltodextrin
  • Silica
  • Vegetable Magnesium Stearate
  • Vegetable Stearic Acid
Efficacy Poor

Dosage Analysis

  • Vitamin C (as Ester-C®, Calcium Ascorbate) 500 mg Effective
  • Calcium (as Ester-C®, Calcium Ascorbate) 50 mg Under-dosed
  • Quercetin 500 mg Effective
  • Bromelain 50 mg Under-dosed
  • Rose Hips (fruit) 50 mg Under-dosed
  • Acerola Extract (berry) 50 mg Under-dosed
  • Rutin 10 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 10
Total Carbohydrate 1 g <1%
Vitamin C (as Ester-C®, Calcium Ascorbate) 500 mg 556%
Calcium (as Ester-C®, Calcium Ascorbate) 50 mg 4%
Quercetin 500 mg *
Bromelain 50 mg *
Citrus Bioflavonoid Complex (2,000 GDU/g) 50 mg *
Rose Hips (fruit) 50 mg *
Acerola Extract (berry) 50 mg *
Rutin 10 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Vegetable Cellulose Safe

Forms a vegetarian capsule shell alternative to gelatin.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Vegetable Magnesium Stearate Safe

Prevents ingredients from sticking to equipment. Derived from vegetable sources.

Vegetable Stearic Acid Generally_safe

It is used to prevent ingredients from sticking to manufacturing equipment.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$26$25$24$23$22 Mar 12 $24.29
Vitacost

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Nature's Bounty

Founded 1971 · Ronkonkoma, New York, USA · 156 products · naturesbounty.com

Certifications

6 certifications
Clean Label Project Verified Source
Consumerlab Verified
Health Canada Licensed Verified Source
Labdoor Verified Source
Usda Organic Verified Source
Fda Gmp Inspections Verified Source

Transparency

3 claims
Third Party Testing Claim — Verified Source
In House Testing — Verified Source

Violation History

1 incident
Recall Nature's Bounty Kids Multivitamin Gummies2023-06-02Source
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Frequently Asked Questions
Is Nature's Bounty Quercetin With Ester-C, 500 mg a good supplement?

Nature's Bounty Quercetin With Ester-C, 500 mg, 60 Capsules received a product quality score of 76/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 10 active ingredients with 30 servings per container. Of the 5 inactive ingredients, 3 are rated safe and 0 are flagged for review. The manufacturer, Nature's Bounty, holds a brand trust score of 86/100 with 6 verified certifications including Clean Label Project, Consumerlab, Health Canada Licensed, Labdoor.

What are the ingredients in Nature's Bounty Quercetin With Ester-C, 500 mg?

Nature's Bounty Quercetin With Ester-C, 500 mg contains 10 active ingredients: Calories (10), Total Carbohydrate (1 g), Vitamin C (as Ester-C®, Calcium Ascorbate) (500 mg), Calcium (as Ester-C®, Calcium Ascorbate) (50 mg), Quercetin (500 mg), Bromelain (50 mg), and 4 more. Notable high-dose ingredients include Vitamin C at 556% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Nature's Bounty Quercetin With Ester-C, 500 mg safe to take?

Nature's Bounty Quercetin With Ester-C, 500 mg, 60 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 Nature's Bounty a trustworthy supplement brand?

Nature's Bounty receives a brand trust score of 86/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1971 and headquartered in Ronkonkoma, New York, USA, the company offers 156 products in their lineup. They hold 6 verified certifications including Clean Label Project, Consumerlab, Health Canada Licensed, Labdoor. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Nature's Bounty has 1 historical regulatory incident on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.