Brand: Thorne Research

CapsuleNon-Nutrient/Non-BotanicalOff Market
Click to view full label

Net Contents

60 Vegetarian Capsule(s)

Serving Size

1 Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

6 93749 33002 8

Product Version

SB330 LSB33008

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.

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: 1 Capsule(s) · 3 per day

IngredientAmount Per Serving
Quercetin250 mg—

Not Present

Other Ingredients

Hypromellose (derived from Cellulose) CapsuleMicrocrystalline CelluloseSilicon Dioxide

Target Groups

Adult (18 - 50 Years)No Allergies

Label Claims

All Other

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested Use: Take 1 capsule three times daily or as recommended by your health-care practitioner.

Warnings & Precautions

Precautions re: All Other

Tamper Evident: Use only if bottle is sealed.

Precautions re: Pregnant or Nursing or Prescription Medications

If pregnant consult your health-care practitioner before using this product.

Storage

Storage

Store tightly sealed in a cool, dry place.

Formulation

Formula re: Type

HYPOALLERGENIC

FDA Statements

FDA Disclaimer Statement

DIETARY SUPPLEMENT

Other Label Statements

Seals/Symbols

(pulled apart capsule)(R)

General: Product/Version Code

SB330 LSB33008

Manufacturer & Distributor

Manufacturer

Thorne Research, Inc.

P.O. Box 25, Dover, Idaho, 83825, USA

1-800-228-1966

Market Reference

$23.00 – $60.00· 12 listings
  • Quercetin Phytosome Thorne

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    $46.00
  • Thorne 60 Capsules

    Target4.8(536)
    $54.00
  • Quercetin Phytosome

    ThorneVet
    $46.00
  • Thorne Quercenase Quercetin Phytosome Supplement with Bromelain

    Bloom Metabolic Insights
    $54.00
  • OurKidsASD.com ResveraCel 60 Capsules Thorne

    Target4.7(1500)
    $60.00
  • Quercetin Complex

    ThorneVet
    $54.00
  • Thorne Radiant Skin Complex 60 Capsules

    Walmart - Pattern4.5(2)
    $49.00
  • Thorne Research Stress Balance Capsules

    Thorne4.7(492)
    $23.00Lowest

Where to Buy Locally

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

  • PrimeBody (Arroios)

    4.9 (194)

    Vitamin & supplements store

    R. Passos Manuel 83B, 1150-258 Lisboa

  • NutriLx Store

    4.9 (135)

    Vitamin & supplements store

    Loja 1 dentro da Estação Metro Campo Pequeno, Av. da República 63B, 1050-189 Lisboa

  • nutry4ALL

    4.2 (27)

    Vitamin & supplements store

    Av. Duque de Loulé 45 A, 1050-086 Lisboa

  • NutriX - Supplement Store

    5.0 (23)

    Vitamin & supplements store

    R. Eng. Adelino Amaro da Costa 118, 4400-134 Vila Nova de Gaia

  • Bpure

    4.9 (33)

    Vitamin & supplements store

    Prct Cristóvão Falcão, 93, R/C Dt, 4465-114 São Mamede de Infesta

  • Enetural

    4.3 (47)

    Vitamin & supplements store

    Rua dos, R. Bem Lembrados 141, Manique, 2645-471 Alcabideche

  • PrimeBody Nutrishop - Roma/Areeiro

    4.7 (49)

    Vitamin & supplements store

    Av. Óscar Monteiro Torres 68A, 1000-221 Lisboa

  • Nutrystore - Norteshopping

    4.3 (22)

    Sports nutrition store

    R. Sara Afonso, 4460-841 Porto

Research & Studies

  • … ‐Driven Approach to Prioritize Compound‐Targeted Conditions in the Nutraceutical Space: Case Study of QuercefitTM (Quercetin Phytosome) Toward Unbalanced …

    L Lili, S Smith, L Kunces, R Antonella… - … & Food Research, 2025 - Wiley Online Library

    … Funding: This study included authors funded by Indena SpA and Thorne … of quercetin on lipid regulation, we conducted a pilot, IRB-approved study collecting data from five healthy but …

    2025
  • Nutr Res Pract: Effects of daily quercetin-rich supplementation on cardiometabolic risks in male smokers

    KH Lee, E Park, HJ Lee - Alternative Medicine Review, 2011 - go.gale.com

    … human studies indicates that dietary quercetin supplementation … quercetin-rich supplementation, derived from onion peel extract, improves cardiometabolic risk components in …

    2011
  • Quercetin LipoMicel—a novel delivery system to enhance bioavailability of quercetin

    J Solnier, C Chang, K Roh, M Du, YC Kuo… - … Product Research, 2021 - researchgate.net

    … capsules (lot no.: 404996) were manufactured and purchased from Thorne Research Inc. (… Solubility Study Individual quercetin formulations used in this study were investigated in terms …

    202118 citations
  • Senolytics dasatinib and quercetin in idiopathic pulmonary fibrosis: results of a phase I, single-blind, single-center, randomized, placebo-controlled pilot trial on …

    A Nambiar, D Kellogg, J Justice, M Goros, J Gelfond… - …, 2023 - thelancet.com

    … per day (quercetin phytosome Thorne Research Sophora japonica concentrate [leaf]… study was funded by National Institutes of Health, and supporting funders were not involved in study …

    2023273 citations
  • Best Quercetin Supplements for MCAS and Histamine Intolerance (2026 Buyer's Guide) Your complete guide to the most researched mast cell stabilizer

    P Nathaniel - mynourishly.com

    … For those who already tolerate supplements well and want stronger absorption, Thorne … and does not constitute medical advice. Quercetin supplements interact with several medications …

  • In vitro and ex vivo anti-inflammatory activity of quercetin in healthy volunteers

    AW Boots, LC Wilms, ELR Swennen, JCS Kleinjans… - Nutrition, 2008 - Elsevier

    … study show anti-inflammatory effects of quercetin in vitro but not ex vivo or in vivo in healthy … The fact that no indication was found for an anti-inflammatory effect in healthy volunteers …

    2008330 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2012-11-21. DSLD Label ID: 15996. 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.