Quercetin 1000 mg®

Non-Nutrient / Non-Botanical

Brand: Best Naturals

CapsuleNon-Nutrient/Non-BotanicalOn Market

Functions

Immune Support

Product label for Quercetin 1000 mg — Click to view full label

Net Contents

120 Vegetarian Capsule(s)

Serving Size

2 Vegetarian Capsule(s)

Servings Per Container

Supplement Form

Capsule

Bar Code (UPC/SKU)

8 17716 01466 1

Product Version

Not Present

Label Analysis

Objective insights generated automatically from the official DSLD label — a quick, factual read of how this product is formulated and disclosed.

1Active Ingredients

Single-ingredient formula listed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

1Dietary Attributes

Label states: Gluten-Free.

This analysis is generated algorithmically from label data for educational reference only. It is not a product endorsement, ranking, or medical advice.

Allergen Guide

Free From

Milk
Egg
Wheat
Soy
Gluten

Allergen flags are parsed automatically from the official label's claims and statements. Always verify against the physical product label before use, especially if you have a severe allergy.

Supplement Facts

Serving Size: 2 Vegetarian Capsule(s) · 2–3 per day

Ingredient	Amount Per Serving
Quercetin Dihydrate(Sophora japonica)	1000 mg	—

Not Present

Other Ingredients

CapsuleMagnesium StearateSilicon Dioxide

Target Groups

Adult (18 - 50 Years)Gluten FreeDairy FreeSugar Free

Label Claims

All OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested Use: As a dietary supplement, take two (2) capsules two or three times daily, preferably 20 minutes before meals. Persons with sensitive stomachs may prefer to take capsules with meals.

Warnings & Precautions

Precautions re: Children

Keep out of the reach of children.

Precautions re: All Other

Do not use if safety seal is broken or missing.

Precautions re: Pregnant or Nursing or Prescription Medications

Caution: For adults only, if you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

Precautions re: All Other

Caution: For adults only, if you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur.

Storage

Keep in cool, dry place.

Formulation

Formula re: Contains

Quercetin is a flavonol (a subclass of flavonoids) and is an effective antioxidant, providing cardiovascular support & antioxidant support. Certain research publications indicate that Quercetin may help support the following: Supports healthy histamine level. Supports healthy immune system. Supports circulatory health.

Formulation re: Other

Premium formula

Formula re: Contains

Quercetin 1000 mg/serving

Formulation re: Other

3rd party lab tested

Formulation re: Does NOT Contain

No artificial color, flavor or sweetener, no preservatives, no sugar, no starch, no corn, no soy, no egg, no milk, no lactose, no gluten, no wheat, no yeast. Sodium free.

FDA Statements

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

FDA Statement of Identity

Dietary Supplement

Other Label Statements

Seals/Symbols

Made in USA

Seals/Symbols

GMP Good Manufacturing Practice Product

General Statements: All Other Content

For additional information call 1-877-659-6004

Manufacturer & Distributor

Distributor

Best Naturals

PO Box 394, Kenilworth, NJ, 07033, USA

1-877-659-6004

Market Reference

$11.89 – $68.82· 40 listings

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Source Naturals Quercetin 1000 with Bromelain
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$21.61
Gaia Herbs Quercetin Synergy
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Nature's Nutrition Antioxidant Dihydrate 1000mg Per Serving
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$24.52

Where to Buy Locally

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GNC
4.0 (224)
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134-136 Fulton St, New York, NY 10038
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176 Mulberry St APT 5, New York, NY 10013
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3.6 (101)
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2 Broadway, New York, NY 10004
Directions (212) 514-5770
The Vitamin Shoppe
4.3 (163)
Vitamin & supplements store
385 5th Ave, New York, NY 10016
Directions (212) 532-4534

Research & Studies

Potential clinical benefits of quercetin in the early stage of COVID-19: results of a second, pilot, randomized, controlled and open-label clinical trial
F Di Pierro, S Iqtadar, A Khan… - … journal of general …, 2021 - Taylor & Francis
… mg of QP corresponded to 200 mg of quercetin; therefore, each daily supplementation corresponded to 600 mg of quercetin… a daily direct contact with the medical doctors involved in the …
2021236 citations
The variable plasma quercetin response to 12-week quercetin supplementation in humans
F Jin, DC Nieman, RA Shanely, AM Knab… - European journal of …, 2010 - nature.com
… , quercetin supplementation in doses of 500 and 1000 mg/day caused large but highly variable increases in plasma quercetin … of quercetin from quercetin aglycone and rutin in healthy …
201097 citations
Effects of the dietary flavonoid quercetin upon performance and health
JM Davis, EA Murphy… - Current sports medicine …, 2009 - journals.lww.com
… regarding quercetin is based … supplement further. This article will examine the recent scientific literature concerning the role of quercetin in mental and physical performance and health. …
2009311 citations
The acute effect of ingesting a quercetin-based supplement on exercise-induced inflammation and immune changes in runners
M Konrad, DC Nieman… - … journal of sport …, 2011 - journals.humankinetics.com
… In a study focusing on exercise-stressed cyclists, supplementation with pure quercetin (1,000 mg/day) over a 5-week period reduced illness rates but did not attenuate postexercise …
2011100 citations
Safety aspects of the use of quercetin as a dietary supplement
S Andres, S Pevny, R Ziegenhagen… - Molecular nutrition & …, 2018 - Wiley Online Library
… aglycone, and frequently in daily doses of up to 1000 mg d –… quercetin used as single compound in dietary supplements. … critical health aspects regarding the safe use of quercetin as …
2018712 citations
Health benefits of quercetin
R Kumar, S Vijayalakshmi… - Defence Life Science …, 2017 - publicationsdrdo.in
… The two weeks supplementation of quercetin in healthy subjects (150 mg/day) was reported to have minimal influence on the plasma, its antioxidant capacity, oxidised LDL, or alpha- or …
2017125 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2022-08-23. DSLD Label ID: 270834. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.