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 Phytosome, 60 Capsules

Product ID: 85784120

Details

Age range (description)
Adult
Brand
THORNE
Diet type
Gluten Free
Flavour
Apple
Item dimensions L x W x H
5.3 x 5.3 x
Item form
Capsule

⚡20x bioavailability boost

🌿250mg pure quercetin phytosome

🛡️GMP-certified purity & safety

S$89

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Description

🛡️ Elevate your immune game with the power of 20x absorption!

CLEAN PURE FORMULA - 250mg of high-purity phytosome with zero gluten, soy, dairy, or shellfish
SCIENCE BACKED TRUST - GMP-certified, third-party tested, and crafted with evidence-based research
FLEXIBLE DAILY DOSING - Take 1 capsule 2-3 times daily with meals for tailored health benefits
NEXT LEVEL ABSORPTION - Up to 20x more bioavailable quercetin for maximum immune support
PLANT POWERED WELLNESS - Harnesses potent flavonoids naturally found in fruits and tea

Thorne Quercetin Phytosome delivers 250mg of a sunflower-derived phospholipid complex that enhances quercetin absorption by up to 20 times compared to standard extracts. This clean-label, gluten-free formula supports immune health with plant-based flavonoids, is GMP-certified, third-party tested, and designed for flexible daily use.

Specifications

ASIN	B0797DQTVZ
Age Range Description	Adult
Allergen Information	Contains: Gluten Free
Benefits	Immune Support
Best Sellers Rank	14,566 in Health & Personal Care ( See Top 100 in Health & Personal Care ) 9 in Quercetin Antioxidant Supplements
Brand	THORNE
Brand Name	THORNE
Country Of Origin	USA
Customer Reviews	4.7 out of 5 stars 2,289 Reviews
Diet Type	Gluten Free
Dosage Form	Capsule
Flavour	Apple
Item Dimensions	5.3 x 5.3 x 9.4 centimetres
Item Form	Capsule
Item Highlight	Advanced Phytosome Complex for Superior Absorption, Flavonoid Formula
Item Weight	59 g
Item form	Capsule
Item weight	59 g
Manufacturer	Thorne Research
Manufacturer Part Number	SB335
Model Number	SB335
Number of Items	1
Primary Supplement Type	B-Complex
Primary supplement type	B-Complex
Specific Uses For Product	Cellular Health,Immune,Immune Support,Inflammatory Response
UPC	693749004356
Unit Count	60.00 count
Unit count	60.00 count

Common Questions

Are the products genuine and authentic?+

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.

How long does delivery take and is it reliable?+

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.

What is Desertcart? Is it safe to order from?+

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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S$89

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to SINGAPORE.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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