Quercetin is a natural flavonoid found in many fruits and vegetables, while Bromelain is an enzyme derived from pineapple. Together, they form a synergistic plant-based complex that provides 1000 mg of Quercetin (15:1 extract) and 200 mg of Bromelain (2500 GDU/g) per daily serving, enriched with Vitamin C, which contributes to the normal function of the immune system.