Deva Vegan Quercetin Zinc+, 90 Tablets supplement bottle
Deva

Vegan Quercetin Zinc+, 90 Tablets

What We Researched
6 active ingredients analyzed · 7 inactive ingredients decoded · 4 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
77
Product Score Fair
73
Brand Score Fair

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Zinc (as amino acid chelate & citrate) 25 mg 227%
Copper (as amino acid chelate) 0.225 mg 25%
Quercetin (as dihydrate) 500 mg *
Elderberry fruit extract (Sambucus nigra) 50 mg *
Echinacea purpurea extract (root) 25 mg *
Oregano leaf extract (Origanum vulgare) 25 mg *
Bioavailability Very Good

Absorption Rating

  • Zinc (as amino acid chelate & citrate) Fair
  • Copper (as amino acid chelate) Fair
  • Quercetin (as dihydrate) Fair
  • Elderberry fruit extract (Sambucus nigra) Good
  • Echinacea purpurea extract (root) Good
  • Oregano leaf extract (Origanum vulgare) Good
Other Ingredients Excellent

Fillers & Additives

  • Cellulose
  • Vegetable Stearic Acid
  • Croscarmellose Sodium
  • Vegetable Magnesium Stearate
  • Silica
  • Hypromellose
  • Vegetable Glycerin
Efficacy Poor

Dosage Analysis

  • Zinc (as amino acid chelate & citrate) 25 mg Effective
  • Copper (as amino acid chelate) 0.225 mg Under-dosed
  • Quercetin (as dihydrate) 500 mg Effective
  • Elderberry fruit extract (Sambucus nigra) 50 mg Under-dosed
  • Echinacea purpurea extract (root) 25 mg Under-dosed
  • Oregano leaf extract (Origanum vulgare) 25 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Zinc (as amino acid chelate & citrate) 25 mg 227%
Copper (as amino acid chelate) 0.225 mg 25%
Quercetin (as dihydrate) 500 mg *
Elderberry fruit extract (Sambucus nigra) 50 mg *
Echinacea purpurea extract (root) 25 mg *
Oregano leaf extract (Origanum vulgare) 25 mg *

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Cellulose Safe

Provides bulk and structure in tablets and capsules.

Vegetable Stearic Acid Generally_safe

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

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Vegetable Magnesium Stearate Safe

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

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Vegetable Glycerin Safe

Helps form softgel capsule shells and acts as a humectant.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$27$26$25$24$23 Mar 12 $24.77
iHerb

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

Brand Trust Report
Deva

Founded 2003 · Cooper City, Florida, USA · 53 products · devanutrition.com/

Certifications

4 certifications
Consumerlab Verified Source
Labdoor Verified Source
Vegan Certified Verified Source
Fda Gmp Inspections Verified Source

Transparency

2 claims
Third Party Testing Claim — Claimed Source

Violation History

1 incident
Prop 65 Lead2010-11-05Source
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Frequently Asked Questions
Is Deva Vegan Quercetin Zinc+, 90 Tablets a good supplement?

Deva Vegan Quercetin Zinc+, 90 Tablets received a product quality score of 77/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 6 active ingredients with 90 servings per container. Of the 7 inactive ingredients, 6 are rated safe and 0 are flagged for review. The manufacturer, Deva, holds a brand trust score of 73/100 with 4 verified certifications including Consumerlab, Labdoor, Vegan Certified, Fda Gmp Inspections.

What are the ingredients in Deva Vegan Quercetin Zinc+, 90 Tablets?

Deva Vegan Quercetin Zinc+, 90 Tablets contains 6 active ingredients: Zinc (as amino acid chelate & citrate) (25 mg), Copper (as amino acid chelate) (0.225 mg), Quercetin (as dihydrate) (500 mg), Elderberry fruit extract (Sambucus nigra) (50 mg), Echinacea purpurea extract (root) (25 mg), Oregano leaf extract (Origanum vulgare) (25 mg). Notable high-dose ingredients include Zinc at 227% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Deva Vegan Quercetin Zinc+, 90 Tablets safe to take?

Deva Vegan Quercetin Zinc+, 90 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 Deva a trustworthy supplement brand?

Deva receives a brand trust score of 73/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2003 and headquartered in Cooper City, Florida, USA, the company offers 53 products in their lineup. They hold 4 verified certifications including Consumerlab, Labdoor, Vegan Certified, Fda Gmp Inspections. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Deva has 1 historical regulatory incident on record, which are factored into the trust score.

What is magnesium good for?

Magnesium Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding magnesium good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

How much magnesium per day?

The optimal dosage depends on your individual health needs, age, sex, and current nutrient levels. Recommended daily amounts are established by health authorities but may vary from therapeutic doses used in clinical research. It's important to check the Supplement Facts label for the exact amount per serving and compare it against the % Daily Value. Some supplements provide mega-doses well above the Daily Value, which may not be necessary and in some cases could be harmful — particularly for fat-soluble vitamins (A, D, E, K) that accumulate in the body. GoodSupp's efficacy analysis evaluates whether a product's dosages align with clinically studied amounts. Always consult your healthcare provider for personalized dosage recommendations.

What is zinc good for?

Zinc Good For is a topic many supplement consumers ask about. In the context of dietary supplements, understanding zinc good for helps you make more informed choices about what you put in your body. The quality and form of ingredients matters significantly — two products listing the same ingredient can differ dramatically in bioavailability and effectiveness. GoodSupp analyzes over 250,000 supplement products to help consumers understand exactly what's in their supplements and whether the formulation meets quality standards.

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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.