Overview
Lecithin-complexed quercetin.
- Endogenously produced or biosynthesized molecule
- Standardized pharmaceutical- or food-grade supplement
- Combined with cofactors that improve absorption or activity
- Capsule or softgel
- Powder
- Sublingual or buccal
- Liposomal liquid
Mechanism of action
Phospholipid micelle for absorption.
- · Phospholipid micelle for absorption
Effects on the body
Organ system effects
Quercetin Phytosome modulates innate and adaptive immune responses, including cytokine signaling and barrier function.
Quercetin Phytosome supports endothelial function, lipid profile, or blood-pressure regulation in cardiovascular trials.
Evidence-based benefits
Better bioavailability than quercetin
Moderate evidencePotential side effects
- · GI upset
Drug interactions
Safety & non-supplemental interactions
Educational summary — always confirm with your clinician or pharmacist before starting, stopping, or combining with prescription therapy.
- ·Autoimmune disease (theoretical immune activation)
- ·Immunosuppressants
Supplement interactions
- Vitamin D3 + K2Foundational immune modulation.
- ZincRequired cofactor for innate and adaptive immune function.
- Omega-3Anti-inflammatory cardiovascular synergy.
No specific avoidances listed.
Dosing & bioavailability
Where to buy
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Third-party testedIndependently verified Quercetin Phytosome — look for USP, NSF, or Informed Sport seals on the label for purity and dose accuracy.Quercetin Phytosome third party tested NSF
CapsulesPre-measured Quercetin Phytosome capsules — easiest for travel and consistent daily dosing without scoops or scales.Quercetin Phytosome capsules
PowderBulk unflavored Quercetin Phytosome powder — best cost-per-gram and flexible dosing for stacking or mixing into drinks.Quercetin Phytosome powder unflavored
Best sellersMost-purchased Quercetin Phytosome products on Amazon — a quick way to see what's reviewed widely before you commit.Quercetin Phytosome best sellerScientific evidence8Show studiesHide studies
Quercetin phytosome bioavailability
Riva A, et al.
12 volunteers
20-fold increase in absorption.
PubMed: Quercetin Phytosome — Better bioavailability than quercetin
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