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Quercetin Complex

product on market Capsule Solgar Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 29% of ingredients have research evidence
B Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Quercetin and citrus bioflavonoids provide antioxidant support with moderate evidence for reducing inflammatory responses. Ester-C and acerola extract contribute vitamin C, which has strong evidence for supporting immune function. Overall, these ingredients work synergistically to manage oxidative stress, though evidence coverage for this specific complex remains limited.

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

Label

Product Label

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

Label Data

2 Vegetable Capsule(s)
Serving Size
100
Servings
Other Combinations
Product Type
29%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

500 mg
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
Ester-C
500 mg (625% DV)
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
Rose Hip, Powder
50 mg
Acerola Extract, Powder
50 mg
50 mg
Market median: 200.0mg (136 products) 3 studies — no high-quality reviews
Market median: 500.0mg (19 products)

Other Ingredients

Hydroxypropylmethylcellulose Magnesium Stearate Silicon Dioxide Stearic Acid Maltodextrin Microcrystalline Cellulose
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions For Use: As a food supplement for adults, two (2) vegetable capsules daily, preferably at mealtime, or as directed by a healthcare practitioner.

Warnings & Precautions

If you are pregnant, nursing, taking any medications or have any medical condition, please consult your healthcare practitioner before taking this product.

Keep out of reach of children.

Do not use if outer bottle seal is missing or damaged.

Do not exceed directions for use. Food supplements should not be used instead of a varied balanced diet and a healthy lifestyle.

Formulation Notes

Quercetin Complex with Ester-C Plus

Suitable for vegans

Sugar, salt, and starch free

Free Of: Gluten, wheat, dairy, soya, yeast, preservatives, sweeteners, artificial flavours or colours.

Solgar's KOF-K certification #K-1250

Additional Information

Store at room temperature.

K Parve (Kosher)

EC NRV = EC Nutrient Reference Value

Metadata

Product Details

UPC / SKU0 33984 02319 2
DSLD Entry Date2025-03-25
Product TypeOther Combinations
FormCapsule
BrandSolgar
DSLD ID325832
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.