• High-purity quercetin at 98% with 500 mg per capsule, delivering a potent antioxidant dose in every pill.
• Plant-sourced quercetin supports maintenance of good health, with a higher, research-aligned dose than foods can provide in supplement form.
• 90 vegetarian capsules offer convenient daily support and strong value for ongoing wellness.
• Quercetin is associated with immune and lung health benefits in current research; in Chinese contexts it is known as 肺结节素, with studies noting positive effects on lung interstitial fibrosis.
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New Roots, Quercetin 98%, 500mg, 90 Capsules
Size
90
vegetarian capsules
UPC
628747111423
Best Before
11/2027
37 people have viewed this item in the last 7 days
About this item
Suggested Use
Adults: Take 1 capsule daily or as directed by your health-care practitioner.
Ingredients
Each vegetarian capsule contains:
Quercetin
500
mg
Non-medical Ingredients:
Vegetable magnesium stearate and silicon dioxide in a non‑GMO vegetable capsule composed of vegetable carbohydrate gum and purified water.
Description
Quercetin is a plant-sourced antioxidant compound for the maintenance of good health. Ongoing research proves exciting for the current role of quercetin in global health.
Quercetin is a naturally occurring flavonoid (plant pigment) which is found in many plants including onions, apples, kale, green tea, and multiple species of berries. Its antioxidant activity makes these plants resilient and protects their cells from environmental stressors.
The antioxidant action of quercetin is recognized for numerous human health benefits. Quercetin has a long history of traditional use, with current research showing promise for potential added health benefits.
Consuming quercetin-rich foods is a good start; however, quercetin in supplement form gives an exponentially greater quantity of this critical compound. It delivers an amount which more closely reflects dosage used in current therapeutic research.
Each capsule of New Roots Herbal’s Quercetin contains 500 mg of naturally sourced, potency-validated quercetin.
Frequently Asked Questions
What is New Roots Quercetin 98% 500mg and what is it used for?
New Roots Quercetin 98% provides 500mg of quercetin per vegetable capsule, standardized to 98% purity. Quercetin is a bioflavonoid antioxidant found naturally in onions, apples, kale, green tea, and berries. It is used to support antioxidant defense, inhibit histamine release (supporting immune and allergy response), strengthen lung and respiratory tissue defense, and may have anti-pulmonary fibrotic properties. Research from Shandong University Traditional Chinese Medicine Hospital documented positive effects on pulmonary interstitial fibrosis. It has gained recognition in China under the term quercetin, associated with supporting lung health against fibrotic conditions.
How does quercetin work and what does the 98% standardization mean?
Quercetin works through several mechanisms. As a flavonoid antioxidant it neutralizes free radicals and reduces oxidative stress in tissues. It stabilizes mast cells, inhibiting the release of histamine and other inflammatory mediators — which is the basis for its use in allergy and immune support. In lung tissue, quercetin has demonstrated anti-inflammatory activity and in research settings has shown anti-pulmonary fibrotic effects by inhibiting transforming growth factor-beta (TGF-beta) signalling pathways. The 98% standardization means that 98% of the active weight in each capsule is confirmed quercetin, ensuring therapeutic-level potency. Many quercetin supplements on the market are not standardized or are standardized to lower concentrations such as 50% or 60%.
Who is New Roots Quercetin 98% suitable for and how should it be taken?
This supplement is suitable for adults seeking antioxidant support, allergy or histamine management, respiratory health support, or protection against pulmonary inflammatory conditions. Take 1 capsule once daily with food. Not suitable for pregnant or nursing women. Quercetin may interact with certain medications including cyclosporine, quinolone antibiotics, and some blood thinners — consult a healthcare practitioner if you are taking prescription medications. As quercetin inhibits certain cytochrome P450 enzymes involved in drug metabolism, those on multiple medications should seek professional guidance before use.
What makes New Roots Quercetin 98% stand out among quercetin supplements?
New Roots Herbal was founded in 1985 in Quebec by Peter Wilkes and operates a cGMP-certified manufacturing facility with an ISO 17025-accredited in-house laboratory — one of very few supplement companies with laboratory accreditation at that level. The lab employs 22 scientists and runs over 600 hours of analytical testing per week across more than 400 products. The 98% purity standardization is at the high end of the market; most generic quercetin products are not standardized or use 50-60% extracts. The non-GMO plant capsule contains only plant magnesium stearate, plant gum, and water as excipients, with no synthetic flow agents. This combination of ISO-accredited potency verification and high-purity standardization offers a verifiable quality advantage over most quercetin supplements.
What is New Roots Herbal, and where is it made?
New Roots Herbal is a Canadian natural health products company founded in 1985 by Peter Wilkes in Vaudreuil-Dorion, Quebec. With over 400 products ranging from probiotics and enzymes to herbal extracts and essential fatty acids, the brand is manufactured entirely in Canada at its cGMP-certified Quebec facility. The company was established with a mission to create safe, effective, and science-grounded natural remedies for improved global health.
What is New Roots Herbal and is it a trustworthy Canadian supplement brand?
New Roots Herbal is a 100% Canadian family-owned supplement company founded in 1985 by Peter Wilkes in Quebec, starting with probiotics and growing into one of Canada's leading natural health product manufacturers. Its 127,000 sq. ft. cGMP-certified facility in Vaudreuil-Dorion, Quebec, houses an ISO 17025-accredited in-house laboratory staffed by 22 scientists, investing over 600 hours per week in raw material and product testing for identity, purity, and potency. The company has been advancing Canadian supplement science for over 40 years.
What makes New Roots Herbal different from other Canadian supplement brands?
The defining differentiator is New Roots Herbal's in-house ISO 17025-accredited laboratory, independently certified since 2014. ISO 17025 is the international standard for testing and calibration laboratories and goes beyond GMP manufacturing compliance to formally certify the competency of the testing laboratory itself. The facility is staffed by 22 scientists holding MSc or BSc degrees from Canadian and European universities, and every product is verified on-site for identity, purity, and potency. This level of internal laboratory infrastructure is rare among supplement brands, which typically rely on external contract labs for quality testing.
How is New Roots Herbal different from other Canadian natural health brands?
New Roots Herbal operates an ISO 17025-accredited internal laboratory — the same accreditation standard used by government reference labs and pharmaceutical QC facilities — rather than outsourcing testing to third parties. With 22 scientists and over 600 hours per week of testing, its analytical depth is closer to a mid-size pharmaceutical company than a typical supplement maker. Founded specifically around probiotics in 1985, it was developing probiotic products nearly two decades before probiotics became a mainstream supplement category in Canada, giving it a depth of formulation experience few competitors can match.
The information provided above is for reference purposes only and has not been reviewed or approved by Health Canada. It does not constitute medical advice and should not replace consultation with a qualified healthcare professional.
Caution
Do not use if you are pregnant or breast-feeding.
Disclaimer
You should not use the information or services on this Site to diagnose or treat any health issues or for prescription of any medication or other treatment.
Always check the product label or packaging prior to using any product. If there are discrepancies, customers should follow the information provided on the product label or packaging.
New Roots, Quercetin 98%, 500mg, 90 Capsules
Size
90
vegetarian capsules
UPC
628747111423
Best Before
11/2027
37 people have viewed this item in the last 7 days
$49.99
Quantity
Not enough inventory in stock
Purchase limit exceeded
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In stock at LIFEPLUS Natural Health
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