🟢 100/100

This product looks safe

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

Product Label

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Label Data

1 Capsule(s) Serving Size
Mineral Product Type
100% Evidence Coverage

Supplement Facts — Evidence Check

100 mg
📊 Market median: 500.0mg (283 products) 📚 173 studies (Tier A: 0, B: 62)
This product: 100mg

Other Ingredients

Cellulose Vegetable Capsule modified Cellulose Gum Silicon Dioxide Magnesium Stearate

Label Claims — Verification

All Other
Structure/Function
All Other (99% of products) Structure/Function (84% of products) Nutrient (23% of products) Qualified Health (1% of products)

Target Groups

Vegetarian Adult (18 - 50 Years) Gluten Free Dairy Free Sugar Free

Product Information

📋 Directions for Use

Recommendations: Take 1 capsule one to three times daily or as directed by your healthcare practitioner.

⚠️ Warnings & Precautions

If pregnant, nursing, or taking prescription drugs, consult your healthcare practitioner prior to use.

🧪 Formulation Notes

Contains no sugar, salt, yeast, wheat, gluten, corn, soy, dairy products, artificial coloring, artificial flavoring, preservatives, or ingredients of animal origin.

Additional Information

EVIDENCE-BASED

Natural, bioavailable form of quercetin -5x more bioavailable + -Rapid absorption--10x faster +

Isoquercetin, the bioactive form of quercetin, is absorbed more effectively in the small intestine because of its glucose moiety. This improved absorption means that is reaches the bloodstream ten times as fast, with peak plasma concentrations up to 20 times greater than other forms of quercetin.+ Fast-acting Isoquercetin enhances cellular antioxidant defenses, supports cardiovascular health and modulates the body's immune-response mechanisms. +As compared to quercetin rutinoside

VEGETARIAN

LI73686.02

This product contains natural ingredients; color variations are normal.

Product Details

UPC / SKU 8 71791 00437 5
DSLD Entry Date 2013-07-25
Product Type Mineral
Form Capsule
DSLD ID 24113
Data Updated 2026-04-11

Research Evidence

184 Research Sources
55 Avg Quality Score
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
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
B Dietary polyphenols and the risk of metabolic syndrome: a systematic review and meta-analysis
Meta Analysis BMC endocrine disorders 2024
B Quercetin and endurance exercise capacity: a systematic review and meta-analysis
Meta Analysis Medicine and science in sports and exercise 2011
B Dietary flavonoid intake and smoking-related cancer risk: a meta-analysis
Meta Analysis PloS one 2013
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
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
B Dietary flavonoid for preventing colorectal neoplasms.
Cochrane Review The Cochrane database of systematic reviews
B Flavonoids for treating venous leg ulcers.
Cochrane Review The Cochrane database of systematic reviews
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
View all evidence for Quercetin →

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