KAPPA NUTRITION Quercetin, 1,000 mg, Vitamin C, 1,000 mg, Zinc, 50 mg supplement bottle
KAPPA NUTRITION

Quercetin, 1,000 mg, Vitamin C, 1,000 mg, Zinc, 50 mg

What We Researched
13 active ingredients analyzed · 1 inactive ingredient decoded · 1 retailer compared · Last updated: Mar 2026
84
Product Score Good
59
Brand Score Poor

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as Calcium Ascorbate) 1000 mg 1111%
Vitamin D3 (as Cholecalciferol) 125 mcg 625%
Vitamin K2 (as MK-7 Natural Bacillus Subtilis Natto) 100 mcg 83%
Zinc (as Zinc Citrate) 15 mg 136%
Selenium (as Selenium Glycinate Albion™) 150 mcg 273%
Copper (as Copper Bisglycinate) 1 mg 111%
Quercetin (20:1 extract Sophora Japonica Flower) 1000 mg
Acerola Cherry (as Malpighia glabra L.) 200 mg
Ginger (Root & Ginger 20:1 Extract) 200 mg
Rose Hips (Rosa Canina L.) 100 mg
Rutin (from Sophora Japonica L.) 100 mg
Echinacea Purpurea (Root) 50 mg
Cloves (Syzygium aromaticum) 25 mg
Bioavailability Very Good

Absorption Rating

  • Vitamin C (as Calcium Ascorbate) Good
  • Vitamin D3 (as Cholecalciferol) Good
  • Vitamin K2 (as MK-7 Natural Bacillus Subtilis Natto) Good
  • Zinc (as Zinc Citrate) Good
  • Selenium (as Selenium Glycinate Albion™) Good
  • Copper (as Copper Bisglycinate) Good
  • Quercetin (20:1 extract Sophora Japonica Flower) Fair
  • Acerola Cherry (as Malpighia glabra L.) Fair
  • Ginger (Root & Ginger 20:1 Extract) Good
  • Rose Hips (Rosa Canina L.) Fair
  • Rutin (from Sophora Japonica L.) Fair
  • Echinacea Purpurea (Root) Fair
  • Cloves (Syzygium aromaticum) Fair
Other Ingredients Excellent

Fillers & Additives

  • Vegetable Capsule (Plant Cellulose)
Efficacy Good

Dosage Analysis

  • Vitamin C (as Calcium Ascorbate) 1000 mg Effective
  • Vitamin D3 (as Cholecalciferol) 125 mcg High
  • Vitamin K2 (as MK-7 Natural Bacillus Subtilis Natto) 100 mcg Effective
  • Zinc (as Zinc Citrate) 15 mg Effective
  • Selenium (as Selenium Glycinate Albion™) 150 mcg Effective
  • Copper (as Copper Bisglycinate) 1 mg Effective
  • Quercetin (20:1 extract Sophora Japonica Flower) 1000 mg Effective
  • Ginger (Root & Ginger 20:1 Extract) 200 mg Under-dosed
  • Rose Hips (Rosa Canina L.) 100 mg Under-dosed
  • Rutin (from Sophora Japonica L.) 100 mg Under-dosed
  • Echinacea Purpurea (Root) 50 mg Under-dosed

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (as Calcium Ascorbate) 1000 mg 1111%
Vitamin D3 (as Cholecalciferol) 125 mcg 625%
Vitamin K2 (as MK-7 Natural Bacillus Subtilis Natto) 100 mcg 83%
Zinc (as Zinc Citrate) 15 mg 136%
Selenium (as Selenium Glycinate Albion™) 150 mcg 273%
Copper (as Copper Bisglycinate) 1 mg 111%
Quercetin (20:1 extract Sophora Japonica Flower) 1000 mg
Acerola Cherry (as Malpighia glabra L.) 200 mg
Ginger (Root & Ginger 20:1 Extract) 200 mg
Rose Hips (Rosa Canina L.) 100 mg
Rutin (from Sophora Japonica L.) 100 mg
Echinacea Purpurea (Root) 50 mg
Cloves (Syzygium aromaticum) 25 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Price Comparison

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

Brand Trust Report
KAPPA NUTRITION

Founded 2007 · Texas, USA · 19 products · kappanutrition.com/

Transparency

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

Violation History

1 incident
Prop 65 Not specifiedSource
Related Supplements
Frequently Asked Questions
Is KAPPA NUTRITION Quercetin, 1 a good supplement?

KAPPA NUTRITION Quercetin, 1,000 mg, Vitamin C, 1,000 mg, Zinc, 50 mg received a product quality score of 84/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 13 active ingredients with 60 servings per container. Of the 1 inactive ingredients, 0 are rated safe and 0 are flagged for review. The manufacturer, KAPPA NUTRITION, holds a brand trust score of 59/100.

What are the ingredients in KAPPA NUTRITION Quercetin, 1?

KAPPA NUTRITION Quercetin, 1 contains 13 active ingredients: Vitamin C (as Calcium Ascorbate) (1000 mg), Vitamin D3 (as Cholecalciferol) (125 mcg), Vitamin K2 (as MK-7 Natural Bacillus Subtilis Natto) (100 mcg), Zinc (as Zinc Citrate) (15 mg), Selenium (as Selenium Glycinate Albion™) (150 mcg), Copper (as Copper Bisglycinate) (1 mg), and 7 more. Notable high-dose ingredients include Vitamin C at 1111% DV, Vitamin D3 at 625% DV, Selenium at 273% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is KAPPA NUTRITION Quercetin, 1 safe to take?

KAPPA NUTRITION Quercetin, 1,000 mg, Vitamin C, 1,000 mg, Zinc, 50 mg 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 KAPPA NUTRITION a trustworthy supplement brand?

KAPPA NUTRITION receives a brand trust score of 59/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2007 and headquartered in Texas, USA, the company offers 19 products in their lineup. Note: KAPPA NUTRITION 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.