Quercetin
Reduce inflammation and modulate immune and allergy responses with this potent flavonoid
★★★★★
Nutri Tailor — 4.6/5 "Excellent" on Trustpilot
60 capsules
30 day supply
per day
Guaranteed additive free
Highest purity
Therapeutically effective
★★★★★ "I won't go back to high street supplements. The difference in quality is something you can actually feel." Susie
Have questions about Quercetin?
"I've heard quercetin helps with allergies. Is that true?"
"Can I take quercetin alongside antihistamines?"
"I have mast cell issues. Would quercetin be helpful for me?"
Get tailored guidance from Nutri365, your personal AI health expert.
★★★★★ "Finally, something that tells you what you actually need." Sarah
| Each capsule contains: | %NRV* | |
|
Quercetin
|
250 mg | † |
† Nutrient Reference Value (NRV*) not established
Quercetin, Hydroxypropyl Methylcellulose (capsule).
For allergy support: 2 capsules, 1-2 times per day with meals.
For gut healing: 2 capsules, 3 times per day away from food.
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Suitable for men.
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Suitable for women.
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Suitable for people under sixteen years of age.
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If pregnant or breastfeeding consult your healthcare professional before purchasing and consuming this product.
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Suitable for vegetarians.
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Suitable for vegans.
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No gluten containing ingredients.
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No nut containing ingredients.
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No dairy containing ingredients.
If you are taking medication consult your prescribing physician before purchasing and consuming supplements.
Store in a cool dry place.
Keep out of reach of children.
Information displayed does not constitute medical advice.
This product should not be used as a substitute for a varied diet.
Once opened, consume within 3 months.
Quality promise
Why clinical grade matters
- ✓ GMP certified, pharmaceutical grade manufacturing
- ✓ Made in UK cleanroom facilities, ISO 9001 & ISO 14001 accredited
- ✓ No fillers, binders or additives — only active ingredients
- ✓ Fully traceable from raw material to finished product
- ✓ Non-GM, non-irradiated, 100% green energy manufacturing
Evidence
What the research shows
Our Health Reference Library is an ever-growing collection of peer-reviewed research and health guidance.
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Positive health results come from combining high-quality supplements with expert guidance.
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This is where Nutri Tailor comes in as it is the only platform to combine expert advice with showing you which supplements are the highest quality in the most effective combination.
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Registered Associate Nutritionist (ANutr), MSc Nutritional Medicine
Frequently asked questions
What does Quercetin do in the body?
Quercetin is a flavonoid that stabilises mast cells, the immune cells that release histamine during allergic reactions. It also has broad anti inflammatory and antioxidant activity and functions as a zinc ionophore, helping shuttle zinc into cells where it supports immune function. It is found naturally in onions, apples, berries and capers.
When is the best time to take Quercetin?
For allergy and immune support, take Quercetin with meals. Standard quercetin has relatively low oral bioavailability (approximately 17 to 25 percent), and the fat content in food significantly improves absorption. For gut focused use, taking it away from food allows quercetin to act directly on the gut lining rather than being absorbed systemically.
How long until I notice improvements?
For seasonal allergies and histamine related symptoms, effects can be noticed within days to a few weeks when taken consistently. For broader anti inflammatory benefits, give the protocol 4 to 6 weeks. Best results are often seen when starting before peak allergen exposure rather than reacting to symptoms.
Can I take Quercetin alongside prescription medication?
If you take any prescription medication, please consult your prescribing healthcare professional before starting Quercetin. Quercetin can interact with certain antibiotics, blood thinners, and cyclosporine. Suitability and allergen detail is in the Informational Booklet supplied with the product.
What dose of Quercetin is typically used?
Each capsule provides 250mg of quercetin. For allergy support, typical daily doses range from 500 to 1000mg, often split across the day. Pairing quercetin with vitamin C and bromelain, as in many allergy protocols, can improve effectiveness because vitamin C recycles quercetin and bromelain enhances absorption.
Is Quercetin suitable during pregnancy or breastfeeding?
Please consult your healthcare professional before starting Quercetin if you are pregnant, breastfeeding, taking prescription medication, or managing a diagnosed health condition. High dose quercetin during pregnancy lacks safety data.
