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Zinc 30 mg & Quercetin 50 mg

product on market Capsule Natural Grocers by Vitamin Cottage 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

Zinc and quercetin are researched for their roles in supporting immune function and antioxidant activity. There is moderate evidence suggesting that zinc may reduce the duration of common colds, while quercetin is studied for its potential anti-inflammatory properties. These ingredients are generally well-tolerated when taken at the specified dosages.

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

Label

Product Label

Label for Zinc 30 mg & Quercetin 50 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Vegetarian Capsule(s)
Serving Size
90
Servings
Other Combinations
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

30 mg (272% DV)
2.7× RDA — within safe limits 263 studies (A:6, B:134)
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)

Other Ingredients

Microcrystalline Cellulose Capsule Silica Rice Bran
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested use: As a dietary supplement, adults take one (1) vegetarian capsule daily, or as directed by a health care professional.

Warnings & Precautions

Caution: As with any supplement, consult your healthcare practitioner before using this product, especially if you are pregnant, nursing, or are under medical supervision for any reason.

Keep out of reach of children.

For serious adverse event reporting call (877) 455-2826.

Formulation Notes

We only put our name on formulas that meet our unrivaled quality standards, and we continue raising the bar on these standards without raising the bar on your budget. Our supplements are GMP (Good Manufacturing Practices) certified, ingredient verified, screened for heavy metals, and formulated without questionable fillers, artificial colors, sweeteners, flavors, and other problematic ingredients. We scrutinize every detail, so you don't have to, because we are, and always have been, your Original good4u Grocers. To your health, - The Isely Family

Our supplements are GMP (Good Manufacturing Practices) certified, ingredient verified, screened for heavy metals, and formulated without questionable fillers, artificial colors, sweeteners, flavors, and other problematic ingredients.

Immune support

Gluten free

Vegetarian

BPA Free

Contains no: Sugar, salt, dairy, yeast, wheat, gluten, corn, soy, preservatives, magnesium stearate, artificial colors or flavors.

Additional Information

Store in a cool, dry place and away from direct light.

GMP Good Manufacturing Practice

Made in USA

Metadata

Product Details

UPC / SKU8 49327 00405 2
DSLD Entry Date2021-11-19
Product TypeOther Combinations
FormCapsule
DSLD ID256853
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
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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.