This site provides general information only and is not medical advice. Talk to a qualified healthcare professional before starting any supplement, especially if you are pregnant, take prescription medication, or have a medical condition.

Some links on this page are affiliate links. If you buy through them, we earn a commission at no extra cost to you. It does not change which products we recommend — see our methodology and full disclosure.

Ingredient

Quercetin

Traditional

A plant flavonoid of mechanistic interest with a small human-trial record.

How it works

Antioxidant and mast-cell stabilizing activity in vitro; oral bioavailability is low.

Evidence

Mechanistic interest exceeds the human-trial record; use cautiously.

Studies

Riva et al., Eur Rev Med Pharmacol Sci, 2019
Phytosome formulation improved quercetin oral bioavailability vs. unformulated.
PubMed 31002012 ↗

One ingredient, one study, one product worth your money.

Weekly. No fluff. Unsubscribe in one click.