The evidence base for quercetin

Quercetin is a naturally occurring flavonoid found abundantly in apples, onions, and capers. It is heavily investigated in longevity science for its antioxidant, anti-inflammatory, and targeted senolytic properties. Recognized most prominently for its role in the D+Q (dasatinib and quercetin) senolytic protocol, it helps clear dysfunctional, pro-inflammatory cells from aging tissues. This hub archives the verified clinical and preclinical evidence defining its efficacy, safety, and exact biological mechanisms.