Quercetin
A flavonoid found in colorful fruits and veggies that's a standout antioxidant and anti-inflammatory — it's also one of the compounds being studied as a potential 'senolytic' (old-cell cleaner).
Benefits
- +Powerful antioxidant and anti-inflammatory
- +May support immune function and reduce allergy symptoms
- +Being researched as a senolytic (clears aging cells)
- +May support cardiovascular health
- +Some evidence for anticancer properties
- +May help with exercise recovery
Dosage & Cost
Bioavailability can be low — look for formulations with vitamin C or other absorption enhancers. Often taken in combination with other senolytics like fisetin. Quercetin is best used in cycles (a few days on, time off) when used for senolytic purposes.
Side Effects
- !Digestive upset or stomach cramps
- !Possible headache
- !May interact with certain medications (blood thinners, chemotherapy)
- !Can lower blood pressure slightly
- !Generally well tolerated at standard doses
Food Sources
- • Onions (especially red onions — one of the richest sources)
- • Apples
- • Berries (blueberries, strawberries)
- • Grapes
- • Broccoli
- • Tomatoes
- • Capers
References & Links
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This page is for informational purposes only. The information here has not been evaluated by the Food and Drug Administration (FDA). No supplement discussed on this page is intended to diagnose, treat, cure, or prevent any disease. Please consult your doctor or a qualified healthcare professional before taking any dietary supplement.