quercetin

Onion skin pigment

Quercetin is a plant pigment found in many fruits, vegetables, and grains—particularly onions, apples, and berries.

It belongs to a class of compounds called flavonoids, which give plants their color and have antioxidant properties.

Quercetin is sold as a dietary supplement, often marketed for anti-inflammatory effects or immune support: I started taking quercetin during allergy season.

sources

onion

Pungent layered bulb

cherry · citrus · broccoli · kale · tomato · green tea · red wine · capers · buckwheat · elderberry

flavonoid

catechin

Phenolic plant antioxidant

metabolite

supplement

capsule

Enclosed dose container

  • tabletFlat portable computing device
  • powderFine dry particles
  • extractConcentrated derived substance

dosage · bioavailability · bromelain · vitamin C · absorption · nutraceutical · liposomal · standardized · concentrated · daily intake

health

anti-inflammatory

Inflammation-reducing agent

allergies · histamine · immunity · anti-viral · asthma · circulation · metabolism · longevity · diabetes · obesity

antioxidant

free radicals

Chemically reactive atomic fragments

DNA repair · peroxidation · anti-inflammatory · neuroprotection · bioavailability · chelation

Opposites
biochemical function (antioxidant activity)

quercetinfree radical

Unstable, electron-seeking particle

free radicals · oxidizing agent · hydrogen peroxide · superoxide

compound type/classification

quercetinvitamin

Essential organic nutrient

ascorbic acid · mineral

inflammatory effect

quercetinprostaglandin

Lipid compound affecting inflammation

histamine · cytokine

Familiarity
Top 1,000,000
Profile
Used worldwide · Timeless · Concrete · Rated G