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Quercetin Strength

product on market Tablet or Pill MegaFood Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 20% of ingredients have research evidence
B Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Quercetin and Vitamin C are supported by moderate evidence for their antioxidant and immune-supporting properties. Eyebright and nettle leaf extracts are traditionally used for respiratory support, though clinical research on these specific botanicals is limited. The overall evidence coverage for this specific ingredient combination is low.

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

Label

Product Label

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

Label Data

1 Tablet(s)
Serving Size
30
Servings
Other Combinations
Product Type
20%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
30 mg (50% DV)
500 mg
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
Eyebright leaf extract
250 mg
Nettle leaf extract
200 mg
FoodState Farm Fresh Fruit Blend
100 mg

Other Ingredients

Cellulose, Plant Guar Gum Vegetable Lubricant Silica
Claims

Label Claims — Verification

Unverified All Other
Info

Product Information

Directions for Use

Suggested Use: 1 tablet daily, 20-30 minutes before a meal.

Warnings & Precautions

Note: Check with your pharmacist, physician or health care provider before taking Quercetin with calcium channel blocking drugs.

Formulation Notes

NSF Certified Gluten-free

V Certified vegan vegan.org

Tested free pesticides & herbicides

Soy free

Dairy free

Non GMO

OK

Additional Information

F1378B Rev: 1 10/15

Nourish - Clear - Breathe

30 Servings

NSF Certified Gluten-free

V Certified vegan vegan.org

Tested free pesticides & herbicides

Soy free

Dairy free

Farm fresh

Non GMO

OK

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Metadata

Product Details

UPC / SKU0 51494 10013 4
DSLD Entry Date2016-08-24
Product TypeOther Combinations
FormTablet or Pill
DSLD ID63342
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.