Plus, it may have brain-protective, anti-allergy, and anticancer properties. The owner makes no representations as to the accuracy or completeness of any information on this site or found by following any link on this site and will not be liable for any losses, injuries, or damages from the exposure or application of the information. Our website services, content, and products are for informational purposes only. Select one or more newsletters to continue. [2] The safety of using quercetin in dietary supplements during pregnancy and lactation has not been established. How are you doing with all this downtime? [12] One molecule of 4-coumaroyl-CoA is added to three molecules of malonyl-CoA to form tetrahydroxychalcone using 7,2′-dihydroxy-4′-methoxyisoflavanol synthase. [5], Quercetin is one of the most abundant dietary flavonoids,[2][6] with an average daily consumption of 25–50 milligrams. Apparently, my comment didn’t post. The appropriate dose for you may depend on factors including your age, gender, and medical history. However, data on long-term safety at high doses are lacking, and concerns regarding carcinogenicity remain unresolved. Phase 1 (safety) clinical studies have shown positive results; however, the number of participants was too small to draw conclusions. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances. Updated December 6, 2016. Scientific Name(s): 2-(3,4-Dihydroxyphenyl)-3,5,7-trihydroxy-4H-1-benzopyran-4-one, 3, 3′, 4′, 5, 7-pentahydroxy-2-phenylchromen-4-one, 3,3′,4′,5,7-pentahydroxyflavoneCommon Name(s): Pentahydroxyflavone, Quercetin, Quercetine, Vitamin P. Interest in quercetin as an antioxidant is ongoing. Here are some tentative ideas about the link between coronavirus, zinc, and a natural product called quercetin, which is a flavonoid found in food. Updated October 19, 2015. This information relates to an herbal, vitamin, mineral or other dietary supplement. This information does not endorse this product as safe, effective, or approved for treating any patient or health condition. Quercetin. I couldn’t care less about their so-called trials. Quercetin is present in many commonly consumed foods and is available as a dietary supplement. Subscribe to Drugs.com newsletters for the latest medication news, alerts, new drug approvals and more. We include products we think are useful for our readers. Taking a look at the scientific studies carried out specifically on quercetin, here are some highlights: So it boils down to two possible benefits from quercetin: modulation of zinc transport into cells (and possibly altering the pH in lysosomes) and blocking viral docking to host cells. People take this supplement for several reasons, including to: Quercetin is a plant pigment with potent antioxidant properties. [15], The bioavailability of quercetin in humans is low and highly variable (0–50%), and it is rapidly cleared with an elimination half-life of 1–2 hours after ingesting quercetin foods or supplements. It’s estimated that the average person consumes 10–100 mg of it daily through various food sources (5). BOTH of us showed quick improvement. I was trying to find out if Quercetin and Quinine is the same thing.