Quercetin
Quercetin Dihydrate
FLAVONOID ANTIOXIDANT & SEASONAL SUPPORT
Quercetin is a potent plant flavonoid found in onions, apples, and berries. It supports cardiovascular health, a balanced immune response, and may help tame seasonal allergy symptoms by stabilizing mast cells and reducing histamine release.
30-day supply
Key Benefits
Potent flavonoid antioxidant reducing oxidative stress
Supports healthy inflammatory response
Promotes cardiovascular and immune health
May reduce seasonal allergy symptoms
Supports These Goals
Linked Biomarkers
Our blood test can measure these markers to personalize your dose
Why you'll love it
Quercetin is nature's antihistamine — and so much more. This plant flavonoid is one of the most abundant antioxidants in the human diet, found in foods like red onions, apples, berries, and green tea. But getting a therapeutic dose from food alone is tough, which is where supplementation comes in.
What makes quercetin special is its ability to stabilize mast cells — the immune cells that release histamine when they detect allergens. By keeping mast cells calm, quercetin can significantly reduce the sneezing, itching, and congestion that come with seasonal allergies, without the drowsiness of conventional antihistamines.
Beyond allergy relief, quercetin is a serious cardiovascular ally. Research shows it supports healthy blood pressure, reduces oxidative stress on blood vessels, and promotes a balanced inflammatory response. It also works synergistically with vitamin C, enhancing its absorption and extending its activity in the body. If you deal with seasonal allergies or just want a well-rounded antioxidant, quercetin delivers.
Clinical Evidence
Our recommendations are grounded in published clinical research. Here are key studies supporting the benefits of Quercetin.
Quercetin lowers blood pressure, especially at 500+ mg/day
Effects of quercetin on blood pressure: a systematic review and meta-analysis of randomized controlled trials
2016
Quercetin reduces inflammation and improves cholesterol levels
The effects of quercetin supplementation on lipid profiles and inflammatory markers among patients with metabolic syndrome: a systematic review and meta-analysis
2020
Study titles shown are simplified summaries of the original research for readability. Original titles are shown in italics below each heading. All studies cited are from peer-reviewed journals indexed in PubMed. Links open in a new tab to the original source. These studies are provided for informational purposes and do not constitute medical advice.
How much do I really need?
Take one 500mg capsule daily with food. For seasonal allergy support, some people benefit from taking 500mg twice daily during peak allergy season. Quercetin pairs especially well with vitamin C and bromelain for enhanced absorption.
Safety & Transparency
Full transparency — here's exactly what's in every capsule, verified by our manufacturer.
Third-Party Tested
Every batch is independently tested by ISO-17025 accredited labs for purity, potency, and contaminants.
Doctor Formulated
Designed by healthcare professionals using evidence-based research and clinical expertise.
cGMP Certified
Manufactured in cGMP & UL certified, FDA-registered facilities with a flawless inspection record.
As with any natural health product, you should consult your healthcare practitioner on the use of this product. Store product in a cool and dry place. Keep out of reach of children. If you experience an adverse event or allergic reaction, discontinue use immediately and contact a healthcare professional.
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