Source Naturals Activated Quercetin™, 50 Tablets supplement bottle
Source Naturals

Activated Quercetin™, 50 Tablets

What We Researched
6 active ingredients analyzed · 4 inactive ingredients decoded · 1 brand certification checked · 2 retailers compared · Last updated: Mar 2026
82
Product Score Good
66
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Total Carbohydrates 1 g <1%
Vitamin C (as magnesium ascorbate) 646 mg 1,076%
Magnesium (as magnesium ascorbate) 50 mg 13%
Quercetin 1 g *
Bromelain (2,000 G.D.U. per gram) 300 mg *
Bioavailability Very Good

Absorption Rating

  • Total Carbohydrates Fair
  • Vitamin C (as magnesium ascorbate) Good
  • Magnesium (as magnesium ascorbate) Good
  • Quercetin Fair
  • Bromelain (2,000 G.D.U. per gram) Good
Other Ingredients Excellent

Fillers & Additives

  • Sorbitol
  • Stearic Acid
  • Modified Cellulose Gum
  • Colloidal Silicon Dioxide and Magnesium Stearate
Efficacy Fair

Dosage Analysis

  • Vitamin C (as magnesium ascorbate) 646 mg Effective
  • Magnesium (as magnesium ascorbate) 50 mg Under-dosed
  • Quercetin 1 g Effective
  • Bromelain (2,000 G.D.U. per gram) 300 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Calories 5
Total Carbohydrates 1 g <1%
Vitamin C (as magnesium ascorbate) 646 mg 1,076%
Magnesium (as magnesium ascorbate) 50 mg 13%
Quercetin 1 g *
Bromelain (2,000 G.D.U. per gram) 300 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Sorbitol Safe

Provides sweetness and helps retain moisture in chewables.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Modified Cellulose Gum Generally_safe

It is used to improve the texture and stability of products.

Colloidal Silicon Dioxide and Magnesium Stearate Generally_safe

They are used to improve the manufacturing process of supplements.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$16$15$14$13$12 Mar 12 $14.35
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
Source Naturals

Founded 1982 · Scotts Valley, CA, USA · 837 products · sourcenaturals.com/

Certifications

1 certification
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source
In House Testing — Verified Source
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Frequently Asked Questions
Is Source Naturals Activated Quercetin™, 50 Tablets a good supplement?

Source Naturals Activated Quercetin™, 50 Tablets received a product quality score of 82/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 6 active ingredients with 16 servings per container. Of the 4 inactive ingredients, 2 are rated safe and 0 are flagged for review. The manufacturer, Source Naturals, holds a brand trust score of 66/100 with 1 verified certifications including Fda Gmp Inspections.

What are the ingredients in Source Naturals Activated Quercetin™, 50 Tablets?

Source Naturals Activated Quercetin™, 50 Tablets contains 6 active ingredients: Calories (5), Total Carbohydrates (1 g), Vitamin C (as magnesium ascorbate) (646 mg), Magnesium (as magnesium ascorbate) (50 mg), Quercetin (1 g), Bromelain (2,000 G.D.U. per gram) (300 mg). Notable high-dose ingredients include Vitamin C at 1,076% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Source Naturals Activated Quercetin™, 50 Tablets safe to take?

Source Naturals Activated Quercetin™, 50 Tablets 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 Source Naturals a trustworthy supplement brand?

Source Naturals receives a brand trust score of 66/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1982 and headquartered in Scotts Valley, CA, USA, the company offers 837 products in their lineup. They hold 1 verified certifications including Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. No regulatory violations or FDA warning letters were found in our research.

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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.