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Quercetin with Zinc

product on market Capsule aSquared Nutrition Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · grounded in 1 source · methodology

Quercetin and zinc are studied for their roles in supporting immune function and cellular health, though evidence for specific outcomes is often limited. Black elderberry is frequently used for its antioxidant properties and potential to reduce cold symptoms. Overall, research on this combination is moderate to limited in scope.

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

Label

Product Label

Label for Quercetin with Zinc
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Vegetable Capsule(s)
Serving Size
60
Servings
Other Combinations
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
Market median: 175.0mg (497 products) 11 studies (A:0, B:1)
30 mg (273% DV)
2.7× RDA — within safe limits 263 studies (A:6, B:134)

Other Ingredients

Vegetable Cellulose Rice Flour
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use: For adults, take two (2) capsules daily, preferably with a meal. Consult your doctor before use; take periodic breaks from use.

Warnings & Precautions

Caution: Do not exceed the recommended dose.

Not intended for pregnant or nursing mothers.

Not intended for children under 18 years of age.

If you are taking any medications, have a known medical condition, or are planning a medical procedure, consult your doctor before use.

Avoid this product if you have or have had kidney stones. Discontinue use and consult your doctor if any adverse reactions occur.

Keep out of reach of children.

Do not use if safety seal is damaged or missing.

Formulation Notes

Vegan friendly

Made with natural ingredients Max strength flavonoid Supports healthy immunity Helps support heart health Has antioxidant properties

No preservatives

aSquared Nutrition is proud to offer a proprietary Quercetin supplement that is enhanced with Zinc and Black Elderberry. Quercetin is a type of flavonoid that is naturally found in berries, broccoli and leafy greens. Quercetin contains antioxidant properties, and helps support immune & skin health.

Additional Information

GMP Good Manufacturing Practice Quality Assured

Please recycle.

Store in a cool, dry place.

USA Formulated

Metadata

Product Details

UPC / SKUX002MDU3OH
DSLD Entry Date2022-04-11
Product TypeOther Combinations
FormCapsule
BrandaSquared Nutrition
DSLD ID263994
Data Updated2026-04-11
Research

Research Evidence

184
Research Sources
55
Avg Quality
91
Systematic Review
75
Meta Analysis
7
Rct
7
Clinical Trial
2
Cochrane Review
1
Openfda Safety
B Treatment of gouty arthritis with traditional Chinese medicine decoction: Meta-analysis, network pharmacology analysis, and molecular docking
Meta Analysis Medicine 2024 PubMed DOI
B Effects of quercetin supplementation on lipid profile: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2017 PubMed
B Dietary polyphenols and the risk of metabolic syndrome: a systematic review and meta-analysis
Meta Analysis BMC endocrine disorders 2024 PubMed DOI
B Quercetin and endurance exercise capacity: a systematic review and meta-analysis
Meta Analysis Medicine and science in sports and exercise 2011 PubMed DOI
B Dietary flavonoid intake and smoking-related cancer risk: a meta-analysis
Meta Analysis PloS one 2013 PubMed DOI
B Clinical efficacy evaluation and potential mechanism prediction on Guizhi-Shaoyao-Zhimu decoction in the treatment of gouty arthritis based on meta-analysis, network pharmacology analysis, and molecular docking
Meta Analysis Medicine 2023 PubMed DOI
B A Systematic Review: Quercetin-Secondary Metabolite of the Flavonol Class, with Multiple Health Benefits and Low Bioavailability
Systematic Review International journal of molecular sciences 2024 PubMed DOI
B Dietary flavonoid for preventing colorectal neoplasms.
Cochrane Review The Cochrane database of systematic reviews PubMed DOI
B Flavonoids for treating venous leg ulcers.
Cochrane Review The Cochrane database of systematic reviews PubMed DOI
B The effects of quercetin supplementation on lipid profiles and inflammatory markers among patients with metabolic syndrome and related disorders: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Critical reviews in food science and nutrition 2020 PubMed DOI
View all evidence for Quercetin →
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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.