Thorne Research

Quercetin Complex (formerly Quercenase)

$54.0060 Capsules

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The Promise

Product identity and core facts Quercetin Phytosome + Bromelain in a single capsule

Thorne Research Quercetin Complex (formerly Quercenase) — a capsule formula combining quercetin phytosome and bromelain.

Brand & product

Thorne Research — Quercetin Complex (formerly Quercenase).

Principal ingredients & forms

Quercetin Phytosome (Sophora japonica flower extract bound to sunflower-derived phospholipids) and bromelain (pineapple‑derived proteolytic enzyme).

Formulation & delivery

Vegetarian hypromellose capsule with microcrystalline cellulose, leucine, and silicon dioxide; quercetin delivered as a phytosome (phospholipid complex) to enhance absorption.*

Quality & certification

NSF Certified for Sport®. Contains no animal gelatin; allergen warning for hypersensitivity to ingredients.

Why It Works

Why these ingredients were combined Concrete formulation details and their supported roles

Specific amounts, species/form, and complementary actions described on the label.

01

Quercetin Phytosome dose & source

Contains 250 mg Quercetin Phytosome derived from Sophora japonica (flower) complexed with sunflower phospholipids.

02

Bromelain dose & origin

Contains 100 mg bromelain — a proteolytic enzyme complex extracted from pineapple.

03

Phytosome absorption mechanism*

Quercetin is bound to phospholipids (phytosome) to significantly enhance absorption and bioavailability compared with standard quercetin.*

04

Complementary enzyme action & cautions

Bromelain is a proteolytic enzyme that can aid quercetin absorption; both ingredients may affect blood‑thinning (use with caution on anticoagulant therapy).*

Reviews

Customer Reviews

Your Journey

How to use, store, and consider this product Clear, label-based directions and precautions

Follow labeled dosing and consult a health-care practitioner for pregnancy, anticoagulant use, or hypersensitivity.

Serving

Recommended use

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

Format & storage

Capsule format

Vegetarian hypromellose capsules; store per label/supplier guidance (keep in original container).

Warnings

Allergy, pregnancy, and interaction warnings

Contraindicated with a history of hypersensitivity to any ingredients. If pregnant, consult your health‑care practitioner before use. Use with caution on anticoagulant therapy due to potential blood‑thinning effects of bromelain and quercetin.

Practitioner considerations

When to involve a clinician

Follow practitioner guidance for dosing adjustments; consult a health‑care practitioner for pregnancy, anticoagulant therapy, or other medical concerns.

Product education

Quercenase: Advanced Quercetin and Bromelain for Immune and Inflammatory Support*

Thorne’s Quercenase is a synergistic formula that combines a highly absorbable form of quercetin with the proteolytic enzyme bromelain to support a healthy inflammatory response and a balanced immune system. This powerful duo is especially beneficial for individuals seeking support for seasonal allergies, respiratory wellness, and joint comfort. By utilizing quercetin phytosome for superior bioavailability, Quercenase delivers these plant-based compounds efficiently to where the body needs them most.*

How It Works: The Synergy of a Flavonoid and an Enzyme

Quercenase leverages the unique and complementary actions of its two key ingredients to provide broad-spectrum benefits for both the immune and inflammatory systems.*

Quercetin Phytosome for Superior Absorption
Quercetin is a potent flavonoid antioxidant known for its ability to stabilize mast cells, which are immune cells that release histamine. By supporting mast cell health, quercetin helps to moderate the body’s histamine response, making it a go-to supplement for seasonal sinus and respiratory support. Standard quercetin is difficult to absorb, but Quercenase features Quercetin Phytosome, a technology that binds the quercetin to phospholipids. This significantly enhances its absorption and bioavailability, ensuring a more effective result.*

Bromelain for a Healthy Inflammatory Response
Bromelain is a complex of protein-digesting enzymes derived from the pineapple plant. It is well-researched for its ability to help maintain a balanced inflammatory response, making it beneficial for soothing occasional aches and soreness in muscles and joints. Bromelain can also aid in the absorption of quercetin, making this a truly synergistic pairing. The combination provides effective support for wound and injury recovery, bruising, and overall tissue health.*

  • Supports a healthy respiratory system and balanced histamine response*
  • Helps maintain a balanced inflammatory response in joints and muscles*
  • Features Quercetin Phytosome for significantly enhanced absorption*
  • Promotes the body’s natural healing process after injury*
  • 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 three times daily 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 **
Bromelain 100 mg **
Other ingredients: Hypromellose (derived from cellulose) capsule, Microcrystalline Cellulose, Leucine, 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 This product should be used with caution in individuals on anticoagulant therapy because of bromelain's and quercetin's potential blood-thinning effects.