Quercetin Plus
100/100
This product looks safe
- No ingredients exceed tolerable upper intake levels
- 50% of ingredients have research evidence
A
Label Compliance Grade
Product Label
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Label Data
2 Capsule(s)
Serving Size
30
Servings
Other Combinations
Product Type
50%
Evidence Coverage
Supplement Facts — Evidence Check
Vitamin C
340 mg
(378% DV)
22 mg
(200% DV)
✅ 2.0× RDA — within safe limits
📚 258 studies (Tier A: 6, B: 134)
400 mg
📊 Market median: 500.0mg (283 products)
📚 173 studies (Tier A: 0, B: 62)
80 mg
📊 Market median: 200.0mg (136 products)
📚 3 studies — no high-quality reviews
Other Ingredients
Hypromellose
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
Adult (18 - 50 Years)
Product Information
📋 Directions for Use
Suggested use: Take 2 capsules, preferably on an empty stomach or with food if you have a sensitive stomach.
⚠️ Warnings & Precautions
If you are pregnant, nursing or taking any medication, consult with a physician before taking this product.
Do not use if safety seal is damaged or missing.
Keep out of reach of children.
🧪 Formulation Notes
Support your immune system all year long and especially when you need it most. We've combined essential nutrients with immune-boosting powers and antioxidant properties to support the body's immune functions.
Made in USA
Immune health
Additional Information
Please recycle Bernard Jensen's Quality products since 1963
Store in a cool, dry place.
Product Details
UPC / SKU
7 26434 55280 8
DSLD Entry Date
2024-09-25
Product Type
Other Combinations
Form
Capsule
Brand
Bernard Jensen's
DSLD ID
318472
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
B
Effects of quercetin supplementation on lipid profile: A systematic review and meta-analysis of randomized controlled trials
B
Dietary polyphenols and the risk of metabolic syndrome: a systematic review and meta-analysis
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
B
A Systematic Review: Quercetin-Secondary Metabolite of the Flavonol Class, with Multiple Health Benefits and Low Bioavailability
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