Thorne Research

Quercetin Phytosome

$46.0060 Capsules

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The Promise

Product identity & formulation Phytosome quercetin for higher absorption*

Standardized quercetin complexed with phospholipids, NSF Certified for Sport®.

Identity

Quercetin Phytosome by Thorne Research — a phytosome-formulated quercetin supplement.

Principal ingredient & amount

Quercetin Phytosome (Sophora japonica extract [flower] / sunflower phospholipid complex), 250 mg per capsule.

Formulation & delivery

Phytosome technology complexes quercetin with phospholipids to enhance absorption; delivered as a vegetarian hypromellose capsule.*

Dietary & quality facts

60 capsules per bottle; NSF Certified for Sport®; other ingredients: leucine, microcrystalline cellulose, silicon dioxide.

Why It Works

Why this formulation Specific formulation facts that distinguish this product

Designed to increase quercetin bioavailability and provide a defined, labeled dose per capsule.*

01

Phytosome absorption*

Quercetin is complexed with phospholipids (phytosome), reported to increase absorption by up to 20× versus standard quercetin.*

02

Standardized source

Uses Sophora japonica flower extract as the quercetin source, specified on the label.

03

Measured single dose

Each capsule supplies a quantified 250 mg dose of the quercetin phytosome complex.

04

Sport & purity certification

NSF Certified for Sport® indicating third‑party quality screening for contaminants relevant to athletes.

Reviews

Customer Reviews

Your Journey

How to use & safety Clear, evidence-based directions, storage, and cautions

Follow labeled directions; note allergy, pregnancy, and interaction warnings.

Serving & timing

Suggested use

Take 1 capsule two to three times daily with meals or as recommended by your health‑care practitioner.

Package & servings

Supply

60 capsules per container — at 1 capsule two times daily, one bottle lasts 30 days.

Warnings

Allergy, pregnancy, interactions

Contraindicated with a history of hypersensitivity to any ingredient. If pregnant, consult your health‑care practitioner. Quercetin has been shown to have a blood‑thinning effect; use with caution or avoid if on anticoagulant therapy.

Storage & practitioner guidance

Storage & professional consultation

Follow practitioner guidance for dose and duration; store per label instructions and keep out of reach of children.

Product education

Quercetin Phytosome: A High-Absorption Bioflavonoid for Immune Support*

Thorne’s Quercetin Phytosome provides a highly bioavailable form of quercetin, a potent plant-based flavonoid found in many fruits and vegetables. Quercetin is a powerful antioxidant and is best known for its ability to support a healthy immune response, particularly in moderating seasonal allergies. However, standard quercetin is difficult for the body to absorb. This advanced formula utilizes phytosome technology to complex the quercetin with phospholipids, which increases its absorption by up to 20 times, ensuring a more effective result.*

How It Works: The Phytosome Advantage for Superior Bioavailability*

This formula works by delivering a clinically effective dose of quercetin to the bloodstream to support multiple aspects of health.*

Supporting a Balanced Histamine Response
One of quercetin’s primary benefits is its ability to act as a “mast cell stabilizer.” Mast cells are immune cells that release histamine and other inflammatory compounds in response to allergens. By supporting the stability of these cells, quercetin helps to maintain a healthy and balanced histamine response. Therefore, it is an excellent choice for individuals seeking nutritional support for seasonal respiratory challenges.*

Promoting a Healthy Inflammatory Response
As a powerful antioxidant, Quercetin Phytosome helps to scavenge free radicals and support a healthy inflammatory response throughout the body. This is beneficial for supporting cardiovascular health and for helping to relieve occasional aches and pains in the joints and muscles after physical exertion. Its superior absorption makes it a premier choice for leveraging the full potential of this exceptional flavonoid.*

  • Features quercetin phytosome for up to 20x greater absorption*
  • Helps stabilize mast cells to support a balanced histamine response*
  • Promotes a healthy inflammatory response in joints and muscles*
  • Provides potent antioxidant support for cardiovascular health*
  • NSF Certified for Sport®, trusted for purity and safety

Supplement record

Review serving details and ingredients for this product.

Supplement Facts:
Suggested Use: Take 1 capsule two to three times daily with meals or as recommended by your health-care practitioner.
Serving Size: One Capsule
Servings Per Container: 60
Ingredient Amount %DV
Quercetin Phytosome (Sophora japonica extract (flower) / Phospholipid complex from Sunflower) 250 mg **
Other ingredients: Leucine, Microcrystalline Cellulose, Hypromellose (derived from cellulose) capsule, Silicon Dioxide.
**Daily Value (DV) not established.
ALLERGY WARNING
This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.
PREGNANCY
If pregnant, consult your health-care practitioner before using this product.
INTERACTIONS
Quercetin has been shown to have a blood-thinning effect; therefore, this product should be used with caution or avoided in individuals on anticoagulant therapy.