Quercetin is a naturally occurring flavonoid found abundantly in foods like onions, apples, berries, and green tea, and it has drawn considerable scientific interest for its broad range of potential health benefits. Research suggests that quercetin possesses notable antioxidant and anti-inflammatory properties, which may support cardiovascular health by helping to maintain healthy blood pressure levels and protect against oxidative stress. Studies indicate it may also play a role in modulating immune function and providing relief from seasonal allergy symptoms by stabilizing mast cells that release histamine. Some evidence points to benefits for exercise performance, potentially reducing fatigue and supporting endurance. Enhanced-absorption forms like quercetin phytosome and isoquercetin have been developed to address the compound's naturally low bioavailability, making it more readily utilized by the body.
Compare this supplementResearch suggests that quercetin supplementation may offer modest benefits for exercise performance and recovery, tho...
View studies →Research suggests that quercetin, a flavonoid found naturally in foods such as onions, apples, berries, and broccoli,...
View studies →Research suggests that quercetin may support immune function through several mechanisms, including modulating inflamm...
View studies →Research suggests that quercetin possesses meaningful antioxidant properties, with studies demonstrating its ability ...
View studies →Research suggests that quercetin may support blood pressure regulation through several distinct biological mechanisms...
View studies →Research suggests that quercetin may offer some cardiovascular benefits, though the direct evidence from the linked s...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Capsule | 250–500 mg | Twice daily | anti-inflammatory support in metabolic conditions | Doses used in clinical studies on quercetin and markers of systemic inflammation such as CRP |
| Capsule | 500 mg | Twice daily | blood pressure regulation and cardiovascular health | Used in RCTs examining quercetin effects on hypertension and endothelial function |
| Capsule | 500–1,000 mg | Daily | general antioxidant support and anti-inflammatory effects | Common in clinical trials on quercetin bioavailability and antioxidant activity |
| Capsule | 1,000 mg | Daily | immune function and allergy relief | Studied in trials assessing quercetin's effect on mast cell activity and upper respiratory symptoms |
| Powder | 1,000 mg | Daily | exercise performance and recovery | Used in meta-analyses and RCTs evaluating VO2 max and exercise-induced inflammation |