Quercetin 300®

Other Combinations

Brand: Allergy Research Group

CapsuleOther CombinationsOff Market

Product label for Quercetin 300 — Click to view full label

Net Contents

60 Vegetarian Capsule(s)

Serving Size

1–2 Capsule(s)

Servings Per Container

Supplement Form

Capsule

Bar Code (UPC/SKU)

7 13947 70060 4

Product Version

Rev. 009.1

Label Analysis

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

3Active Ingredients

3 distinct active ingredients are disclosed in Supplement Facts.

100%Amount Transparency

Every active ingredient discloses a specific amount per serving.

2% Daily Value Coverage

2 ingredients report a %DV; 2 meet or exceed 100% DV.

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: 1–2 Capsule(s) · 1–3 per day

Ingredient	Amount Per Serving	% Daily Value
Vitamin C(Ascorbic Acid)	150 mg	167%
Vitamin E(DL-Alpha-Tocopheryl Acetate)	93.8 mg NE	625%
Quercetin Dihydrate	600 mg	—

Percent Daily Value are based on a 2,000 calorie diet.

Other Ingredients

Hydroxypropyl MethylcelluloseMicrocrystalline CelluloseSilicon DioxideL-Leucine

Target Groups

Adult (18 - 50 Years)

Label Claims

All OtherStructure/Function

Directions & Suggested Use

Suggested/Recommended/Usage/Directions

Suggested Use As a dietary supplement, 1 or 2 capsules one to three times daily with meals, or as directed by a healthcare practitioner.

Warnings & Precautions

Precautions re: All Other

Warning: Consuming this product can expose you to lead which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/food

Storage

Keep in a cool, dry place, tightly capped.

Formulation

Formula re: Contains

High quality quercetin, derived from a non-citrus, hypoallergenic plant source, stabilized with additional antioxidants so as not to auto-oxidize (degrade spontaneously).

Formulation re: Other

High quality quercetin, derived from a non-citrus, hypoallergenic plant source, stabilized with additional antioxidants so as not to auto-oxidize (degrade spontaneously).

Formula re: Contains

Stabilized with antioxidants

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

Manufacturer & Distributor

Distributor

Allergy Research Group

South Salt Lake, UT, 84115

800.545.9960

Market Reference

$14.25 – $388.00· 38 listings

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Purchase Quercetin 300 for Immune & Allergy Support | Hasan Mirza MD
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Quercetin 300
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Quercetin – Immune, Allergy & Inflammation Support Green Bay
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$29.95

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.

The Vitamin Shoppe
4.3 (215)
Vitamin & supplements store
3226 Buford Dr, Buford, GA 30519
Directions (770) 904-5964
GNC
4.0 (41)
Vitamin & supplements store
3333 Buford Dr Spc 2071, Buford, GA 30519
Directions (678) 482-4473
Good Nutrition
4.5 (243)
Vitamin & supplements store
2640 Beaver Ruin Rd #C, Norcross, GA 30071
Directions (770) 409-8844
Nutrition Depot
4.9 (41)
Vitamin & supplements store
2095 GA Hwy 211, Braselton, GA 30517
Directions (770) 868-1401
Marati Wellness | Black Seed Oil, Sea Moss, Moringa Leaf, Colloidal Silver Supplements Store
5.0 (15)
Vitamin & supplements store
3300 Hamilton Mill Rd Ste 102 #535, Buford, GA 30519
Directions (404) 999-1007
The Vitamin Shoppe
4.4 (227)
Vitamin & supplements store
2130 Pleasant Hill Rd Suite C, Duluth, GA 30096
Directions (678) 957-0101
GNC
3.1 (46)
Vitamin & supplements store
875 Lawrenceville-Suwanee Rd, Lawrenceville, GA 30043
Directions (770) 338-9508
The Vitamin Shoppe
4.4 (198)
Vitamin & supplements store
2118 Scenic Hwy N, Snellville, GA 30078
Directions (770) 972-8057

Research & Studies

Novel food supplement containing a combination of postbiotics and plant-derived compounds regulates epithelial barrier integrity and immune response in …
F Oglio, S Coppola, A Cadavere, R Di Santillo… - Foods, 2026 - mdpi.com
20262 citations
Immunonutritional effects elicited by a novel multicomponent food supplement in children with cow's milk allergy: results from a randomized, placebo-controlled trial
L Carucci, E Caldaria, F Oglio, RF Iorio… - … in Allergy, 2026 - frontiersin.org
… two study groups, only the active study product group showed a … Quercetin is among the most thoroughly investigated dietary … This research was funded by the Italian Ministry of Health—…
20262 citations
Quercetin preserves oral cavity health by mitigating inflammation and microbial dysbiosis
EC Mooney, SE Holden, XJ Xia, Y Li, M Jiang… - Frontiers in …, 2021 - frontiersin.org
… Collectively, our findings reveal that Quercetin supplement … The total dosing volume was 300 µl of either Quercetin or … allergic inflammation in mice, orally administered Quercetin …
202167 citations
Quercetin–Syrian Rue
M Gorbonosov, L Markel - … Evidence-Based Guide to Supplements, 2024 - Springer
… Further, this chapter discusses the supplement’s … healthcare provider to be able to reference each supplement … People with a yeast allergy may be allergic to this and other …
2024
Exploratory pilot trial of a multicomponent immunonutritional supplement in children with allergic asthma and rhinitis: The INAPRA study
E Caldaria, R Iorio, D Marziali, F Oglio… - International …, 2026 - Elsevier
… characteristics were comparable between the two study groups (Table 2). Sensitization to … of plausibility for effects on allergic airway disease. Quercetin has been shown to enhance …
2026
Quercetin and related polyphenols: new insights and implications for their bioactivity and bioavailability
K Kawabata, R Mukai, A Ishisaka - Food & function, 2015 - pubs.rsc.org
… of quercetin and contains about 300 mg kg −1 fresh onion. … to determine whether supplementing quercetin as an … actions of quercetin and its related polyphenols on our health, the …
2015399 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2021-12-18. DSLD Label ID: 258360. 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.