Best Quercetin for Immunity in Australia
Potent flavonoid antioxidant found in onions, apples, and berries. Supports immune function, reduces inflammation, and has natural antihistamine properties. Compare prices across Australian retailers and find the best value.
Quick Summary
Dosage
500-1000 mg/day
Time to Effect
2-4 weeks
From
$0.12/serve
Evidence
moderate (4/5)
Timing: Take with vitamin C for enhanced absorption. Best taken with meals.
Clinical Evidence
Quercetin reduces illness but not immune perturbations after intensive exercise
PMID: 17136005Quercetin 1000mg/day for 3 weeks significantly reduced upper respiratory tract infections (1 of 20 vs 9 of 20 in placebo) in trained athletes.
Best Prices in Australia
BulkSupplements Quercetin Powder
500mg per serve · 200 serves · Powder
$0.12/serve
$24.90 total
Doctor's Best Quercetin Bromelain
500mg per serve · 180 serves · Capsule
$0.18/serve
$32.95 total
NOW Quercetin with Bromelain
500mg quercetin per serve · 120 serves · Capsule
$0.24/serve
$28.90 total
Life Extension Bio-Quercetin
150mg phytosome per serve · 60 serves · Capsule
$0.37/serve
$22.00 total
Thorne Quercetin Phytosome
250mg phytosome per serve · 60 serves · Capsule
$0.63/serve
$38.00 total
Interactions to Watch
- Cyclosporinemoderate— Quercetin may increase cyclosporine levels by inhibiting CYP3A4 and P-glycoprotein.
- Antibiotics (fluoroquinolones)moderate— Quercetin may compete with fluoroquinolone antibiotics for DNA gyrase binding.
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