🟢 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
90 Servings
Other Combinations Product Type
100% Evidence Coverage

Supplement Facts — Evidence Check

20 mcg (100% DV)
✅ 1.3× RDA — within safe limits 📚 604 studies (Tier A: 16, B: 251)
RDA 0.015mg This product: 0.02mg UL 0.1mg
500 mg
📊 Market median: 500.0mg (283 products) 📚 173 studies (Tier A: 0, B: 62)
This product: 500mg

Other Ingredients

Cellulose Cellulose Magnesium Stearate Silica

Label Claims — Verification

Nutrient
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) Kosher Gluten Free Dairy Free Sugar Free

Product Information

📋 Directions for Use

Directions: Adults, take one (1) capsule daily, preferably with a fat-containing meal. As a reminder, discuss the supplements and medications that you take with your health care providers.

⚠️ Warnings & Precautions

No Yeast, corn or wheat No Soy, milk or salt No Sugar or preservatives No Artificial colors, flavors or sweeteners

Caution: If you are pregnant, nursing, or taking medication, have a medical condition or planning surgery, consult a doctor before using this product.

Stop using and consult a doctor if any adverse reactions occur. Do not accept if seal is broken.

Keep out of the reach of children.

🧪 Formulation Notes

2-in-1 formula for immune system support More than Quercetin, this formula contains Vitamin D3 to pack an immune punch! Together, Quercetin (a flavonoid found in fruits & vegetables) and Vitamin D3 (essential nutrient) supports immune health

Yes Certified gluten-free by GFCO.org

Yes Certified vegetarian by the AVA

Yes Kosher-Parve

This product has been manufactured at a GMP Registered facility.

Quercetin + D3 with 500 mg of Quercetin & 100% DV of Vitamin D3

Certified gluten-free

Supports a healthy immune response & strong cellular function

Additional Information

Yes Recyclable packaging Yes Manufacturing supports wind power

Certified B Corporation GFCO Certified Gluten Free GFCO.org K Parve (Kosher)

Established 1971

Our Pledge of Integrity Authenticity Cleanliness Freshness Consistency Accuracy

Store in a dry place between 59 degrees-86 degrees F.

Product Details

UPC / SKU 0 15794 01624 3
DSLD Entry Date 2021-05-22
Product Type Other Combinations
Form Capsule
Brand Country Life
DSLD ID 248967
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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