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Quercetin 500 Plus

product on market Tablet or Pill Newflower Farmers Markets Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

This profile combines quercetin and bromelain, which have moderate evidence for supporting respiratory and inflammatory responses. Vitamin C and manganese provide antioxidant support, while turmeric is researched for its anti-inflammatory properties. Overall, the clinical evidence coverage for this specific combination is limited.

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

Label

Product Label

Label for Quercetin 500 Plus
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
Other Combinations
Product Type
50%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
250 mg (417% DV)
10 mg (500% DV)
4.3× RDA — above typical dose (UL: 11 mg) 9 studies — no high-quality reviews
500 mg
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
50 mg
Market median: 200.0mg (136 products) 3 studies — no high-quality reviews
50 mg
Market median: 450.0mg (254 products) 243 studies (A:0, B:100)
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)

Other Ingredients

May contain one or more of the following:
Claims

Label Claims — Verification

Unverified All Other
Info

Product Information

Directions for Use

Suggested Use: As a dietary supplement, adults take one (1) tablet, two (2) times daily with meals, or as directed by a health care professional.

Warnings & Precautions

Keep out of reach of children.

Formulation Notes

Contains No Added sugar, salt, dairy, yeast, wheat, gluten, corn, preservatives, artificial colors or flavors.

500 mg of Quercetin Per Tablet

Contains soy.

Additional Information

Store in a cool, dry place and away from direct light.

QUALITY AND POTENCY GUARANTEED. {QR code}

Vitamin C, bromelain, tumeric, citrus bioflavonoids and manganese work synergistically to enhance the proven benefits of Quercetin.

688

Metadata

Product Details

DSLD Entry Date2013-01-25
Product TypeOther Combinations
FormTablet or Pill
DSLD ID17341
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.