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Quercetin plus Vitamin C

product on market Capsule Wonder Laboratories Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Quercetin and Vitamin C are researched for their antioxidant properties and roles in supporting immune function. While Vitamin C has strong evidence for general health, research on quercetin's efficacy in humans is more limited. Together, these ingredients may help reduce oxidative stress in the body.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for Quercetin plus Vitamin C
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
Other Combinations
Product Type
50%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
700 mg (1167% DV)
250 mg
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)

Other Ingredients

Gelatin Vegetable Magnesium Stearate Vegetable Cellulose
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: As a dietary supplement, take 1 capsule in the morning and 1 capsule in the evening preferably with meals.

Warnings & Precautions

Tamper evident: Do not use this product if imprinted foil seal under cap is broken or missing.

Keep out of reach of children.

Caution: If you are pregnant or nursing, consult your physician before taking this product.

Formulation Notes

Quercetin plus Vitamin C is a high-potency, synergistic combination of Quercetin, a non-citrus bio-active bioflavonoid derived from Rutin from the buckwheat plant and corn free, pure crystalline vitamin C. Quercetin is more potent than common bioflavonoid complexes and contains no citrus allergens. It is a natural antioxidant and an active derivative of the bioflavonoid Rutin.

Quercetin plus Vitamin C is a high-potency, synergistic combination of Quercetin, a non-citrus bio-active bioflavonoid derived from Rutin from the buckwheat plant and corn free, pure crystalline vitamin C.

Mfg. in an FDA Registered Facility using Good Manufacturing Practices (GMPs)

Conforms to USP <2091> for weight. Meets USP <2040> disintegration for maximum bioavailability.

Supports antioxidant health and immune system health

Gluten free

Ko Kosher Service

Additional Information

Keep tightly closed. Store at room temperature: 59 degrees – 86 degrees F (15 degrees – 30 degrees C).

Formula 480

Ko Kosher Service

Made in USA

Metadata

Product Details

UPC / SKU0 99528 48010 4
DSLD Entry Date2020-03-24
Product TypeOther Combinations
FormCapsule
DSLD ID215598
Data Updated2026-04-11
Research

Research Evidence

371
Research Sources
54
Avg Quality
148
Meta Analysis
82
Systematic Review
71
Rct
62
Clinical Trial
2
Regulatory Source
1
Cochrane Review
1
Narrative Review
1
Other
1
Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024 PubMed DOI
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021 PubMed DOI
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.