Quercetin 300 mg®

Non-Nutrient / Non-Botanical

Brand: Moss Nutrition

CapsuleNon-Nutrient/Non-BotanicalOn Market

Functions

Immune Support

Product label for Quercetin 300 mg — Click to view full label

Net Contents

60 Vegetarian Capsule(s)

Serving Size

1 Capsule(s)

Servings Per Container

Supplement Form

Capsule

Bar Code (UPC/SKU)

M091

Product Version

V.0923.11

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: 1 Capsule(s) · 1–3 per day

Ingredient	Amount Per Serving
Quercetin(Quercetin Dihydrate)	300 mg	—

Not Present

Other Ingredients

HypromelloseMicrocrystalline CelluloseStearateSilicon Dioxide

Target Groups

Adult (18 - 50 Years)Gluten Free

Label Claims

All OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested use: 1 capsule with meals, 1 to 3 times per day or as directed by your healthcare professional.

Warnings & Precautions

Precautions re: Pregnant or Nursing or Prescription Medications

Warning: If you are taking medication, have a medical condition or an upcoming medical procedure, or are pregnant or nursing consult a physician before using.

Precautions re: All Other

If adverse reactions occur, discontinue use and consult your healthcare practitioner.

Precautions re: Children

Keep out of reach of children.

Storage

Store sealed in a cool, dry place.

Formulation

Formulation re: Other

Supports a healthy histamine response

Formulation re: Does NOT Contain

Does not contain gluten.

FDA Statements

FDA Disclaimer Statement

This statement has 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

Brand IP Statement(s) re: (c), (TM), (SM)

Moss Nutrition Professional Supplements Est. 1991

Manufacturer & Distributor

Distributor

Moss Nutrition Products

380 Russell Street, Hadley, MA, 01035

800-851-5444

Market Reference

$27.00 – $60.00· 13 listings

Moss Nutrition Quercetin 300 mg - 60 caps
Rooted Nutrition
$27.00Lowest
Moss Nutrition Quercetin 300 mg Immune | Hasan Mirza MD
Hasan Mirza, MD
$27.00Lowest
Quercetin Complex
Mait Method4.8(516)
$54.00
Purchase Quercetin 300 for Immune & Allergy Support | Hasan Mirza MD
Hasan Mirza, MD
$34.99
CGI Green Sea Moss + Bladderwrack Capsules
CGI Green
$60.00
Martin Clinic quercetin 90 Capsules Natural Antioxidant & Bioflavonoid
Martin Clinic
$37.95
Nutricology Quercetin 300
GoSupps.com5.0(14)
$54.99
Quercetin LipoMicel Matrix
Curated Wellness4.8(2300)
$49.95

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.

GNC
3.3 (31)
Vitamin & supplements store
3039 NY-50 Ste One, Saratoga Springs, NY 12866
Directions (518) 587-4073
Four Seasons Natural Foods Store
4.6 (129)
Vitamin & supplements store
120 Henry St, Saratoga Springs, NY 12866
Directions (518) 584-4670
Holistic Health Marketplace
5.0 (8)
Vitamin & supplements store
402 Rowland St Ste 2, Ballston Spa, NY 12020
Directions (518) 288-3399
Walgreens
3.1 (49)
Vitamin & supplements store
3020 NY-50, Saratoga Springs, NY 12866
Directions (518) 580-8850
Menges & Curtis Apothecary
4.7 (23)
Pharmacy
472 Broadway, Saratoga Springs, NY 12866
Directions (518) 306-5343
CVS
3.2 (41)
Vitamin & supplements store
653 US-9, Wilton, NY 12831
Directions (518) 584-4021
Herbal Answers
Wholesaler
156 Circular St Apartment 7, Saratoga Springs, NY 12866
Directions (518) 581-1968
The Vitamin Shoppe
4.2 (137)
Vitamin & supplements store
108 Wolf Rd, Albany, NY 12205
Directions (518) 435-2401

Research & Studies

Quercetin in sports and exercise: a review
JA Kurtz, TA Vandusseldorp, B Uken… - International journal of …, 2023 - pmc.ncbi.nlm.nih.gov
… Several investigations have focused on Quercetin to decrease health-related concerns, … /, 8 weeks) (21) or Q in a Q cocktail containing other vitamins and minerals (300 mg Q, 6 weeks) (…
202314 citations
Antioxidant potential of various extracts from 5 common European mosses and its correlation with phenolic compounds
D Smolińska-Kondla, M Zych, P Ramos… - Herba …, 2022 - herbapolonica.pl
… alcohol extracts from mosses were added. For all measurements, 0.5 ml of moss extract was … curve equation of quercetin and expressed as micrograms of quercetin equivalents per ml …
202217 citations
Effects of the dietary flavonoid quercetin upon performance and health
JM Davis, EA Murphy… - Current sports medicine …, 2009 - journals.lww.com
… of 600 mg·d −1 (2 × 300 mg twice daily) for a period of 6 wk ( 34 ). However, the specific effects of quercetin in this study could not be determined because quercetin was administered in …
2009311 citations
Natural products: The role and mechanism in low‐density lipoprotein oxidation and atherosclerosis
S Zhang, L Li, W Chen, S Xu, X Feng… - Phytotherapy …, 2021 - Wiley Online Library
… (300 mg/… supplementation of quercetin has no significant effect on resting energy expenditure, blood lipids and lipoproteins. Supplementing healthy people with a daily dose of quercetin …
2021102 citations
Bioactive polyphenols from healthy diets and forest biomass
T Stevanovic, PN Diouf… - … Nutrition & Food Science, 2009 - ingentaconnect.com
… and dicotyledons), are not found in mosses, algae, lichens and fungi which do not form … of quercetin in vegetables ranging between 30 and 300 mg/kg. The quercetin content in most …
2009111 citations
Polyphenol supplementation and antioxidant status in athletes: A narrative review
A Bojarczuk, M Dzitkowska-Zabielska - Nutrients, 2022 - mdpi.com
… Dietary supplements are sold in pharmacies or health and … of flavonols (mainly quercetin) and flavones as 21 and 2 mg/d, … contain up to 200–300 mg of polyphenols per 100 g of fresh …
202241 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2025-04-24. DSLD Label ID: 329176. 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.