Clean Nutraceuticals Quercetin Zinc Vitamin C D supplement bottle
Clean Nutraceuticals

Quercetin Zinc Vitamin C D

What We Researched
7 active ingredients analyzed · 4 inactive ingredients decoded · 1 retailer compared · Last updated: Mar 2026
84
Product Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Vitamin C (as ascorbic acid) 1000 mg 1111%
Vitamin D3 (as cholecalciferol) 125 mcg 625%
Zinc (as zinc citrate, zinc gluconate, zinc picolinate) 50 mg 455%
Clean Q-Defend Proprietary Blend 350 mg
Elderberry (Sambucus nigra) (Fruit) Extract (10:1) 100 mg
Quercetin (Sophora japonica) (Flower Bud) Extract (10:1) 100 mg
Black Pepper (Piper nigrum) (Fruit) Extract (4:1) 5 mg
Bioavailability Very Good

Absorption Rating

  • Vitamin C (as ascorbic acid) Fair
  • Vitamin D3 (as cholecalciferol) Good
  • Zinc (as zinc citrate, zinc gluconate, zinc picolinate) Good
  • Clean Q-Defend Proprietary Blend Fair
  • Elderberry (Sambucus nigra) (Fruit) Extract (10:1) Good
  • Quercetin (Sophora japonica) (Flower Bud) Extract (10:1) Fair
  • Black Pepper (Piper nigrum) (Fruit) Extract (4:1) Good
Other Ingredients Excellent

Fillers & Additives

  • Vegetarian cellulose capsules
  • Magnesium Stearate
  • Silicone Dioxide
  • Microcrystalline Cellulose
Efficacy Fair

Dosage Analysis

  • Vitamin C (as ascorbic acid) 1000 mg Effective
  • Vitamin D3 (as cholecalciferol) 125 mcg High
  • Zinc (as zinc citrate, zinc gluconate, zinc picolinate) 50 mg High
  • Elderberry (Sambucus nigra) (Fruit) Extract (10:1) 100 mg Under-dosed
  • Quercetin (Sophora japonica) (Flower Bud) Extract (10:1) 100 mg Under-dosed
  • Black Pepper (Piper nigrum) (Fruit) Extract (4:1) 5 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Vitamin C (as ascorbic acid) 1000 mg 1111%
Vitamin D3 (as cholecalciferol) 125 mcg 625%
Zinc (as zinc citrate, zinc gluconate, zinc picolinate) 50 mg 455%
Clean Q-Defend Proprietary Blend 350 mg
Elderberry (Sambucus nigra) (Fruit) Extract (10:1) 100 mg
Quercetin (Sophora japonica) (Flower Bud) Extract (10:1) 100 mg
Black Pepper (Piper nigrum) (Fruit) Extract (4:1) 5 mg

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Vegetarian cellulose capsules Unknown
Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silicone Dioxide Generally_safe

It is used as a flow agent to prevent clumping and improve powder flow.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

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
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Frequently Asked Questions
Is Clean Nutraceuticals Quercetin Zinc Vitamin C D a good supplement?

Clean Nutraceuticals Quercetin Zinc Vitamin C D received a product quality score of 84/100 in GoodSupp's independent analysis, indicating strong overall quality. The product contains 7 active ingredients with 30 servings per container. Of the 4 inactive ingredients, 2 are rated safe and 0 are flagged for review.

What are the ingredients in Clean Nutraceuticals Quercetin Zinc Vitamin C D?

Clean Nutraceuticals Quercetin Zinc Vitamin C D contains 7 active ingredients: Vitamin C (as ascorbic acid) (1000 mg), Vitamin D3 (as cholecalciferol) (125 mcg), Zinc (as zinc citrate, zinc gluconate, zinc picolinate) (50 mg), Clean Q-Defend Proprietary Blend (350 mg), Elderberry (Sambucus nigra) (Fruit) Extract (10:1) (100 mg), Quercetin (Sophora japonica) (Flower Bud) Extract (10:1) (100 mg), and 1 more. Notable high-dose ingredients include Vitamin C at 1111% DV, Vitamin D3 at 625% DV, Zinc at 455% DV. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Clean Nutraceuticals Quercetin Zinc Vitamin C D safe to take?

Clean Nutraceuticals Quercetin Zinc Vitamin C D 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.

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.