Antioxidant
Quercetin
Also known as: Quercetin dihydrate, Quercetin phytosome, Quercetin Phytosome® (Quercefit®), Quercefit
Quercetin is a flavonoid antioxidant with anti-inflammatory properties; the Phytosome® delivery system uses phospholipids to enhance absorption compared to standard quercetin. Evidence supports potential benefits for allergies, cardiovascular health, and exercise recovery, though human clinical data remains moderate.
Primary uses
- Allergies
- Inflammation
- Immune support
- Senolytic
- Antioxidant support
- Anti-inflammatory response
- Allergy symptom management
- Cardiovascular health
- Exercise recovery
How it works
- Mast cell stabilizer
- Inhibits inflammatory enzymes
- Senolytic (clears senescent cells)
- Zinc ionophore
Dosage
- Typical range
- 500-1000 mg daily
- Timing
- Divided doses
- With food
- Yes
- Duration
- Safe long-term
- Special populations
- Allergies, inflammation
Forms
- Quercetin phytosome
- With bromelain
- Standard
- Capsule· 70/100
- Powder· 70/100
Safety
Common side effects
- Well tolerated
Contraindications
- None
Products containing Quercetin
Top-scoring supplements in our catalog that list Quercetin on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Known interactions
Evidence notes
Broad anti-inflammatory effects
Grade B: Some human trials support key claims; further confirmation needed.
Cited research for Quercetin
Clinical studies referenced across Formulate guides that mention quercetin. Each links to the full study page with PubMed source + the guides that cite it.
Quercetin compared head-to-head
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