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Quercetin is a flavonoid antioxidant that has been shown to have immune supportive properties. It has been suggested to support the immune system through its antioxidant, properties, which help protect the body against oxidative stress and cellular damage.

Product Benefits
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Support The Epithelial Barrier In The Respiratory Tract.\nImmune Support.

Ingredients

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\n Supplement FactsServing \n Size: 1 Capsule \n \n
	Amount Per Serving	% Daily Value
Vitamin C (as Ascorbic Acid)	100mg	111%
Zinc (as Zinc Oxide)	11mg	100%
Quercetin Dihydrate (from Sophora japonica Bud Extract)	500mg	†
\n** Percent Daily Values are based on a 2,000 calorie diet.
\n† Daily Value not established.
\nOther Ingredients: Hypromellose (Capsule), Magnesium Stearate, Silicon Dioxide, Microcrystalline Cellulose.

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Suggestions

Special Note

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Warnings

Disclaimer

Herbspro.com offers\n\t\t\t\t\t\t\t\tnationally branded products that are produced according to manufacturing standards\n\t\t\t\t\t\t\t\tset by regulators at everyday low prices. Do not use unproven, unbranded products, which can pose serious risks to your health.","brand":{"@type":"Brand","name":"Quantum Health"},"category":"Quercetin","dateModified":"2026-05-05T22:10:13.994444","offers":{"@type":"AggregateOffer","lowPrice":34.99,"highPrice":34.99,"priceCurrency":"USD","priceValidUntil":"2026-06-22","offerCount":1,"availability":"https://schema.org/InStock","url":"https://storestream.ai/products/quantum-health-quercetin-500-mg-90-caps-6054f099","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","applicableCountry":"US","returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":30,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn"},"shippingDetails":{"@type":"OfferShippingDetails","shippingDestination":{"@type":"DefinedRegion","addressCountry":"US"},"shippingRate":{"@type":"MonetaryAmount","value":"0","currency":"USD"},"deliveryTime":{"@type":"ShippingDeliveryTime","handlingTime":{"@type":"QuantitativeValue","minValue":0,"maxValue":1,"unitCode":"DAY"},"transitTime":{"@type":"QuantitativeValue","minValue":1,"maxValue":7,"unitCode":"DAY"}}},"offers":[{"@type":"Offer","seller":{"@type":"Organization","name":"Universal Herbs Inc"},"price":34.99,"priceCurrency":"USD","priceValidUntil":"2026-06-22","availability":"https://schema.org/InStock","url":"https://herbspro.com/products/quercetin-255450","itemCondition":"https://schema.org/NewCondition","hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","applicableCountry":"US","returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","merchantReturnDays":30,"returnMethod":"https://schema.org/ReturnByMail","returnFees":"https://schema.org/FreeReturn"},"shippingDetails":{"@type":"OfferShippingDetails","shippingDestination":{"@type":"DefinedRegion","addressCountry":"US"},"shippingRate":{"@type":"MonetaryAmount","value":"0","currency":"USD"},"deliveryTime":{"@type":"ShippingDeliveryTime","handlingTime":{"@type":"QuantitativeValue","minValue":0,"maxValue":1,"unitCode":"DAY"},"transitTime":{"@type":"QuantitativeValue","minValue":1,"maxValue":7,"unitCode":"DAY"}}}}]}}

Quantum Health, Quercetin+, 500 Mg, 90 Caps

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