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Quercetin Flavonoid 1,000 mg

product on market Capsule LifeSeasons Essentials 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 is a flavonoid with moderate evidence supporting its role as an antioxidant and its ability to modulate inflammatory responses. Research suggests it may help stabilize mast cells to reduce histamine release. However, overall evidence coverage for this specific formulation is limited.

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

Label

Product Label

Label for Quercetin Flavonoid 1,000 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Capsule(s)
Serving Size
30
Servings
Non-Nutrient/Non-Botanical
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

1000 mg
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)

Other Ingredients

Hypromellose Microcrystalline Cellulose Silica Rice Bran
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: Take 2 capsules daily, with or without food.

Warnings & Precautions

Caution: Use only as directed.

If pregnant, nursing, taking medication, or under medical supervision for any condition, consult a healthcare professional before use.

Not intended for children. Keep out of reach of children.

Tamper evident. Do not use if printed safety seal under cap is broken or missing.

Formulation Notes

No milk, eggs, fish, crustacean shellfish, tree nuts, wheat, peanuts, soy, colors, flavors, preservatives, or magnesium stearate.

About Quercetin Quercetin is a plant pigment (flavonoid) shown to help the body combat free radical damage. It is found in many fruits, vegetables and grains.

Quercetin supports: Immune system function Exercise performance Cardiovascular health Healthy inflammatory and histamine response

Supports antioxidant activity & immune function

Vegetarian.

Gluten-free.

Made in USA with globally sourced ingredients.

Metadata

Product Details

UPC / SKU8 10034 44136 2
DSLD Entry Date2024-05-23
Product TypeNon-Nutrient/Non-Botanical
FormCapsule
DSLD ID310517
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.