Quercetin 475 mg High Potency®

Non-Nutrient / Non-Botanical

Brand: Swanson

CapsuleNon-Nutrient/Non-BotanicalOn Market

Functions

Immune Support

Product label for Quercetin 475 mg High Potency — Click to view full label

Net Contents

60 Veggie Capsule(s)

Serving Size

1 Veggie Capsule(s)

Servings Per Container

Not specified

Supplement Form

Capsule

Bar Code (UPC/SKU)

0 87614 11671 6

Product Version

SW1671 Rev 1 10 10 18

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 Veggie Capsule(s) · 1–2 per day

Ingredient	Amount Per Serving
Quercetin(Quercetin Dihydrate)	475 mg	—

Not Present

Other Ingredients

Rice FlourHypromelloseCalcium Laurate

Target Groups

Adult (18 - 50 Years)

Label Claims

All OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested use: As a dietary supplement, take one veggie capsule one to two times per day with water.

Warnings & Precautions

Precautions re: All Other

Warning: For adults only.

Precautions re: Pregnant or Nursing or Prescription Medications

Consult your physician before using this or any product if you are pregnant or nursing, taking medication or have a medical condition.

Precautions re: Children

Keep out of reach of children.

Precautions re: All Other

Do not use if seal is broken.

Storage

Store in a cool, dry place.

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

General Statements: All Other Content

Maintains immune health and protects blood vessels Provides protection against free radical damage Supports cholesterol levels already within normal range Science-Backed Quality Since 1969

General Statements: All Other Content

Immune health 475 mg per capsule

General: Product/Version Code

SW1671 Rev 1 10 10 18

Manufacturer & Distributor

Distributor

Swanson Health Products

Fargo, ND, 58104, USA

1-800-437-4148

Market Reference

$12.76 – $259.99· 19 listings

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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.

The Vitamin Shoppe
4.5 (152)
Vitamin & supplements store
19510 Hawthorne Blvd, Torrance, CA 90503
Directions (310) 921-3574
EarthNutri
5.0 (14)
Vitamin & supplements store
17510 S Broadway C, Gardena, CA 90248
Directions (310) 523-5108
Nutritional Warehouse
4.8 (34)
Vitamin & supplements store
2118 Lincoln Blvd, Venice, CA 90291
Directions (310) 392-3636
GNC
4.0 (44)
Vitamin & supplements store
12730 Hawthorne Blvd, Hawthorne, CA 90250
Directions (310) 676-9228
Doctry's Choice
5.0 (40)
Vitamin & supplements store
1212 W Gardena Blvd Suite B, Gardena, CA 90247
Directions (877) 920-2988
Healthy Nutrition Group LLC
4.7 (127)
Health and beauty shop
306 Pico Blvd, Santa Monica, CA 90405
Directions (888) 416-3907
Blaine's Nutrition Center
4.7 (13)
Vitamin & supplements store
206 Ave I, Redondo Beach, CA 90277
Directions (310) 540-4826
The Vitamin Shoppe
4.5 (150)
Vitamin & supplements store
1800-G Rosecrans Ave, Manhattan Beach, CA 90266
Directions (310) 643-5634

Research & Studies

Flavonoids, inflammation and cancer
H Swanson - 2015 - books.google.com
… are found in high concentrations in berries.8,19 Quercetin is also … of quercetin absorption from apples and onions in healthy … , daily administration of quercetin (500 mg) was found to …
201524 citations
Deciphering the role of polyphenols in sports performance: From nutritional genomics to the gut microbiota toward phytonutritional epigenomics
V Sorrenti, S Fortinguerra, G Caudullo, A Buriani - Nutrients, 2020 - mdpi.com
… quercetin, protocatecuic acid contributes to beneficial health … the effect of supplementation of 500 mg of quercetin daily for … quercetin group, suggesting that quercetin supplementation …
202068 citations
Herbs and natural supplements, volume 2: An evidence-based guide
L Braun, M Cohen - 2014 - books.google.com
… Finally, thank you to all the health care professionals that have told me they use this book … Effect of quercetin and Albizia saponins on rat mast cell. Indian J Physiol Pharmacol 29.1 (…
2014569 citations
Functional Food Ingredients Enhancing Immune Health: A Systematic Review
I Skenderidou, S Leontopoulos… - International journal of …, 2025 - mdpi.com
… Flavonoids such as quercetin and hesperidin display potent immunomodulatory and antiviral properties. Quercetin inhibits viral entry and replication by targeting viral proteases and …
202518 citations
The Simultaneous Prevention of Multiple Diseases: A “One Ring to Rule Them All” Framework for Redox-Driven Health and Longevity
HR Silverstein, AA Rizvanov, DD Haines, FF Mahmoud… - Nutrients, 2026 - mdpi.com
20262 citations
Nonvitamin and nonmineral nutritional supplements
SM Nabavi, ATS Silva - 2018 - books.google.com
… as supplements. Readers will find valuable insights on the impact of dietary supplementation on human health, … aspects of each supplement.-Provides reliable information on available …
2018148 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2019-05-28. DSLD Label ID: 203179. 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.