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Acai Berry (1)
Acetyl-L-Carnitine Supplements (11)
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Zinc Supplements, Lozenges, and Melts Review (26)
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Quercetin & Rutin Supplements

Quercetin for Fatty Liver?

July 22, 2024
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Can taking quercetin reduce liver fat in people with fatty liver disease? Find out what a recent study showed in the What It Does section of our Quercetin Supplements Review, which includes our Top Picks for quercetin.

Also see: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?

Caution With Quercetin and Heart Medication

December 18, 2023
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Quercetin may interact with many medications, including one for irregular heart rhythm, according to preliminary research. See medications with which quercetin may interact in the Concerns and Cautions section of our Quercetin Supplements Review. Also see our Top Picks among quercetin supplements.

Headache, Alcohol, and Quercetin

November 22, 2023
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Quercetin may put one at risk for headache and facial flushing when drinking alcohol, according to recent research. Quercetin is also known to interact with many prescription drugs. See the details in the Concerns and Cautions section of our Quercetin and Rutin Supplements Review.

Quercetin and Antivirals

March 31, 2023
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Be aware that quercetin might reduce the effectiveness of some antivirals, including an antiviral in Paxlovid used to treat COVID-19. Get the details in the Concerns and Cautions section of our Quercetin Supplements Review, which includes information about other potential interactions with quercetin, as well as our Top Picks among quercetin supplements.

Also see our CL Answer about Supplements for COVID-19.

Quercetin for Seasonal Allergies?

July 19, 2022
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Did quercetin improve nasal and eye symptoms among people with seasonal allergies in recent study? Find out in the Seasonal Allergy section of our Quercetin Supplements Review.

Quercetin From Food or Supplements?

June 01, 2022
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Is it more cost effective to get quercetin from food (as rutin) than supplements? See our answer in the Quercetin Review.

Most Quercetin Brands Fail Test

May 13, 2022
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Twenty out of 24 brands of quercetin purchased on Amazon contained much less quercetin than listed in a recent analysis. For details by brand, see the Quality Concerns section of our Quercetin Review.

Quercetin for Severe COVID?

December 06, 2021
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Does quercetin help people with severe COVID-19? See what a recent study suggests in the Viral Infections section of our Quercetin Supplements Review. Also see our Top Picks for quercetin.

Quercetin & COVID

November 04, 2021
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Find out if quercetin helped people with early-stage COVID-19 in a recent study. Details are in the Viral Infections section of our Quercetin Supplements Review, which includes our test results and Top Picks among quercetin supplements.

Is Quercetin Safe?

March 30, 2020
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Quercetin has been proposed as a treatment for a range of medical conditions, including COVID-19, but is it safe? Find out what studies have found, including results of a recent, small clinical trial, in the Concerns and Cautions section of the Quercetin Supplements Review. Also see our Top Picks for quercetin.