Quercetin: Benefits, Dosage, and Side Effects

Quercetin: Benefits, Dosage, and Side Effects

Quercetin is a well-researched flavonoid (plant pigment) with powerful antioxidant properties. It has numerous functions including anti-carcinogenic, anti-inflammatory, and antiviral activities. The body can’t produce quercetin, making it an essential nutrient to consume through diet or supplements. It's also available in common herbal supplements such as ginkgo biloba and St. John’s wort.

The primary quercetin benefits come from its anti-oxidant qualities, studies show. Free radicals in the body can cause chronic inflammation, which quercetin may help reduce and prevent. Test-tube studies show quercetin reduced inflammation in human cells (1). An even more extensive study was done with 50 women who took 500mg of quercetin over an 8-week period (2). These women experienced drastically lessened early morning stiffness and pain, and after-activity pain.

There are a variety of other benefits quercetin may provide such as reduced allergy symptoms, potential anticancer effects, lowered risk of chronic brain disorders, and lower blood pressure. These effects could be amplified when quercetin is consumed with other select nutrients, or when taken as a supplement blend with specific ingredients.

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  • Important building block for other flavonoids
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WebMD report on Quercetin


NIH report on Quercetin


Studies referenced

https://www.ncbi.nlm.nih.gov/pubmed/27294919 (1)

https://www.ncbi.nlm.nih.gov/pubmed/27710596 (2)

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