Quercetin Powder

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Quercetin is a naturally occurring plant pigment or flavonoid that is found in many foods including citrus fruits and vegetables, olive oil, and red wine. Used for antioxidant and immune support effects. It has the chemical formula ‎C15H10O7 and a molecular weight of 302.236 g/mol.

Quercetin Benefits and Uses

Quercetin is a bioflavonoid with a number of health benefits including circulatory system and immune-supporting properties. Quercetin is one of the best-studied bioflavonoids with a large amount of data and research. It is taken primarily for its antioxidant and free-radical scavenging effects.

Quercetin is known by a number of alternative names, including:

  • 3, 3′, 4′, 5, 7-pentahydroxyflvanone
  • 3, 3′, 4′, 5, 7-pentahydroxy-2-phenylchromen-4-one
  • Vitamin P
  • Sophoretin
  • Meletin
  • Quercetine
  • Xanathaurine
  • Quercetol
  • Quercetin

Scientific Consensus

Quercetin is considered possibly safe for use by most people when taken at the recommended serving size. Large servings may cause headaches and tingling sensations, and very large servings may cause kidney damage.

Warning: There is not enough research about the safety of Quercetin for pregnant and breastfeeding women. Do not use this supplement if you have any underlying medical conditions.

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The statements on this page have not been evaluated by the FDA. The products on this page are not intended to diagnose, treat, cure, or prevent any disease.
February 6, 2023
Anna Fornachon
Quercetin Powder

This is great value and I feel it is good quality, definitely recommend it, lasts for a long time too

July 19, 2016
Quercetin Powder

I use for health reasons - I think the quality is very high. I think it is very good for problems with capillaries, rosacea, allergy. I think it is good for the skin.

Supplement Facts

Serving size: 500mg
Servings per container:
Amount per serving: % DV


Store securely in a dry cool location away from direct sunlight. Keep out of reach of children and pets. Do not take this or any other supplement, and instead consult doctor about use, if you are under the age of 18, pregnant or breastfeeding, taking prescription or OTC / nonprescription drugs, or if you have any known or suspected medical conditions. Do not use if product safety seal was damaged or missing upon receipt.
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Gluten Free
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Scientifically Tailored Ingredients

A naturally-derived polyphenol compound found predominantly in grapes, berries, citrus, and other foods. Research has demonstrated powerful antioxidant effects, along with immune-modulating benefits.

– Potent antioxidant
– Forms zinc-ionophores
– Stimulates immune system