• “Quercetin is said to be one of the most widely used bioflavonoids for the treatment of metabolic and inflammatory disorders.
• It is one of the most abundant dietary flavonoids found in fruits (mainly citrus), green leafy vegetables as well as many seeds, buckwheat, nuts, flowers, barks, broccoli, olive oil, apples, onions, green tea, red grapes, red wine, dark cherries, and berries such as blueberries and cranberries. The highest concentrations of flavonols were found in vegetables such as onions and broccoli, fruits such as apples, cherries, and berries, and drinks such as tea and red wine.”

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5214562/

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