What makes Thorne supplements high quality?

Thorne produces high-quality supplements through rigorous testing, well-researched ingredient sourcing, and strict manufacturing standards. We avoid unnecessary additives, binders, and fillers that may interfere with nutrient absorption.

How does Thorne test its supplements for quality?

To confirm the purity of our ingredients, the potency of our formulas, and the absence of all contaminants, we carry out a minimum of four rounds of testing on every product we manufacture. 100+ Thorne employees are dedicated to ensuring quality.

Are Thorne supplements clinically tested and safe?

Thorne partners with researchers and conducts clinical trials to support the efficacy of our products. Our team of doctors and medical experts substantiate each ingredient in every formula based on extensive clinical research and medical literature.

Why are Thorne products more expensive than other supplements?

When it comes to the health of our customers, we never settle. Thorne products may be priced higher than some others because of our commitment to quality at every step. We don’t simply meet the standard in dietary supplements — we set the standard.

Where are Thorne supplements made and where are the ingredients sourced from?

Located in South Carolina, Thorne manufactures supplements in the USA using globally sourced ingredients. When it comes to ingredient sourcing, we seek out only the highest-quality ingredients, selecting each one for its purity and effectiveness.

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THORNE - Quercetin Complex - Antioxidant Supplement with Bromelain for Immune Health, Respiratory Support & Seasonal Allergy Relief* - Third-Party Certified - Gluten, Dairy & Soy-Free - 60 Capsules

Product ID: 11854934

Details

Age Range (Description)
Adult
Brand
THORNE
Diet Type
Gluten Free
Flavor
Unflavored
Item Form
Capsule
Item Weight
0.06 kg

⚡Phosphatidylcholine-enhanced absorption

🌿Bromelain for swelling relief

🛡️Immune support powerhouse

390.55 DT

Duties & taxes included

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Description

🛡️ Elevate your wellness game with the allergy-fighting, inflammation-busting Quercetin Complex!

CLEAN PURE FORMULA - Free from gluten, dairy, soy, and major allergens—crafted for sensitive lifestyles.
ELITE IMMUNE DEFENSE - Quercetin complex fortified with bromelain to boost your body's natural shield.
CLINICALLY TRUSTED BRAND - Endorsed by 100+ pro sports teams and top healthcare practitioners nationwide.
MAXIMIZED NUTRIENT UPTAKE - Phosphatidylcholine binding ensures superior absorption and effectiveness.
FAST ACTING INFLAMMATION RELIEF - Bromelain targets bruising and swelling for quicker recovery.

THORNE Quercetin Complex is a premium antioxidant supplement combining quercetin with bromelain and phosphatidylcholine for enhanced immune support, respiratory health, and seasonal allergy relief. Third-party certified and free from gluten, dairy, soy, and major allergens, it’s trusted by professional athletes and healthcare experts alike. Each bottle delivers 60 vegetarian capsules designed for optimal absorption and fast-acting inflammation reduction.

Specifications

ASIN	B000FGWBPQ
ASIN	B000FGWBPQ
Age Range Description	Adult
Allergen Information	Dairy Free, Egg Free, Fish Free, Gluten Free, Peanut Free, Shellfish Free, Soy Free, Tree Nut Free
Best Sellers Rank	#29,875 in Health & Household ( See Top 100 in Health & Household ) #22 in Quercetin Antioxidant Supplements
Brand Name	THORNE
Customer Reviews	4.6 4.6 out of 5 stars (384)
Date First Available	April 11, 2005
Diet Type	Gluten Free
Dosage Form	Capsule
Flavor	Unflavored
Global Trade Identification Number	00693749332022
Item Dimensions	2.09 x 2.09 x 3.72 inches
Item Form	Capsule
Item Weight	0.06 kg
Item model number	SB332
Manufacturer	Thorne Research
Manufacturer	Thorne Research
Manufacturer Part Number	SB332
Material Features	Vegetarian
Model Name	Thorne Quercetin Complex (Formerly Quercenase) - Nutritional Support for Seasonal Allergies - 60 Capsules - 60 Servings
Model Number	SB332
Number of Items	1
Primary Supplement Type	Quercetin
Product Benefits	Immune Support
Product Dimensions	2.09 x 2.09 x 3.72 inches; 2.12 ounces
Specific Uses For Product	Swelling
UPC	693749332022
Unit Count	60 Count

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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