Quercetin 500 mg®

Botanicals & Herbs

Brand: Nature's Harmony

CapsuleBotanicalOn Market
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Net Contents

60 Capsule(s)

Serving Size

2 Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

Not specified

Product Version

400595.01-02

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.

Supplement Facts

Serving Size: 2 Capsule(s) · 1 per day

IngredientAmount Per Serving
Quercetin500 mg

Not Present

Other Ingredients

Silicon DioxideMagnesium StearateGelatin

Target Groups

Adult (18 - 50 Years)Gluten FreeDairy Free

Label Claims

All OtherQualified Health

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Recommended Use: Useful in the prevention of histamine release in allergy sufferers. Indicated in any inflammatory condition. Recommended Dose (Adults): Take 2 capsules per day.

Warnings & Precautions

Precautions re: Children

KEEP OUT OF REACH OF CHILDREN.

Precautions re: All Other

DO NOT USE IF SEAL UNDER CAP IS BROKEN.

Precautions re: Pregnant or Nursing or Prescription Medications

Risk Information: Consult a health care practitioner before use if you are pregnant or breastfeeding.

Storage

Storage

STORE IN A COOL DRY PLACE.

Formulation

Formulation re: Does NOT Contain

This product does not contain corn, dairy, egg, gluten, shellfish, soy, sulfites, wheat, or artificial colours, flavours, or preservatives.

Other Label Statements

General Statements: All Other Content

Natural Allergy Relief

General Statements: All Other Content

{Capsule} Actual Size

General: Product/Version Code

400595.01-02

Seals/Symbols

SunOpta A healthy products company

General Statements: All Other Content

UPC CODE TO BE: 0 63047 00595 7

General Statements: All Other Content

A Proud Canadian Company

Manufacturer & Distributor

Manufacturer

SunOpta Inc.

6 Commerce Crescent, Acton, ON, L7J 2X3

Other

1-877-929-2548

Market Reference

$11.95 – $69.97· 40 listings
  • Nature's Fusions Nutri Quercetin Phytosome

    CVS Pharmacy4.8(21)
    $42.99
  • Spring Valley Antioxidant Capsules

    Walmart4.4(67)
    $14.48
  • Quercetin 500 Plus

    My Nature's Delight
    $57.99
  • Nature's Bounty Antioxidant Capsules with Ester-C

    Blain's Farm & Fleet4.8(12)
    $22.99
  • NaturesPlus Pro Quercetin 500

    NaturesPlus4.8(306)
    $16.11
  • Antioxidant Support for Immune System Health

    mo4t.com
    $31.95
  • Quercetin Synergy 500

    Pure Prescriptions
    $63.95
  • Natural Factors Quercetin 500 mg

    The Healthy Place4.8(717)
    $19.57

Where to Buy Locally

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  • RightNutri

    4.9 (78)

    Vitamin & Supplements Shop

    26 Queenstown Rd, London SW8 3RX

  • London Supplements

    3.7 (84)

    Vitamin & Supplements Shop

    13, Waverley Industrial Park Waverley Industrial Estate, Hailsham Dr, Harrow HA1 4TR

  • Supplemented

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    Online Retail Ltd Box 1031A, Surbiton, Kingston upon Thames KT1 9AH

  • Metagenics UK

    4.6 (203)

    Vitamin & Supplements Shop

    Botany Business Park, Macclesfield Rd, Whaley Bridge, High Peak SK23 7DQ

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    34, New House, 67-68 Hatton Garden, London EC1N 8JY

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    9-11 Thomas St, Portadown, Craigavon BT62 3NP

  • Lifestyle Vitamins

    4.2 (10)

    Vitamin & Supplements Shop

    Enterprise Centre, Nutribrand, Pine Grove, Crowborough TN6 1DH

  • Zipvit

    4.8 (18)

    Vitamin & Supplements Shop

    Towers Business Park, The, Wheelhouse Rd, Rugeley WS15 1UZ

Research & Studies

  • Two-month period of 500 mg lecithin-based delivery form of quercetin daily dietary supplementation counterbalances chronic fatigue symptoms: A double …

    M Rondanelli, A Riva, G Petrangolini, C Gasparri… - Biomedicine & …, 2023 - Elsevier

    … Given this background, the aim of this study was to evaluate if a 2-month period of daily Quercetin Phytosome™ 500 mg supplementation is of benefit for the relief of CF. …

    202312 citations
  • Natural ingredients to improve immunity

    A Gasmi, M Shanaida, O Oleshchuk, Y Semenova… - Pharmaceuticals, 2023 - mdpi.com

    … supplementation of quercetin on the innate immune system. Supplementation of quercetin (500 mg/day and 1000 mg/… explore the health-promoting effects of certain natural ingredients …

    2023137 citations
  • Inhibitory effects of quercetin and its main methyl, sulfate, and glucuronic acid conjugates on cytochrome P450 enzymes, and on OATP, BCRP and MRP2 …

    V Mohos, E Fliszár-Nyúl, O Ungvári, K Kuffa, PW Needs… - Nutrients, 2020 - mdpi.com

    … health effects of Q [1], it is widely marketed through the Internet as the active ingredient of dietary supplements … Our current results are in harmony with these previous observations. We …

    2020100 citations
  • Immunostimulant and antidepressant effect of natural compounds in the management of Covid-19 symptoms

    A Alesci, A Fumia, P Lo Cascio, A Miller… - Journal of the american …, 2022 - Taylor & Francis

    … important effects on our health and mental balance (… /500 mg of quercetin together with 500 mg of Vit. C in patients with mild symptoms from SARS-CoV-2, and up to 500 mg of quercetin …

    202229 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 …

    2010101 citations
  • Daily quercetin supplementation dose-dependently increases plasma quercetin concentrations in healthy humans

    S Egert, S Wolffram, A Bosy-Westphal… - The Journal of …, 2008 - academic.oup.com

    … Our finding that quercetin supplementation did not decrease the concentrations of the proinflammatory cytokine TNFa might be explained by a general lack of quercetin to reduce TNFa …

    2008449 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2013-05-24. DSLD Label ID: 21892. 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.