About the product A powerful combination - Quercetin, Bromelain enhance each other's antioxidant and anti-inflammatory potential. Quercetin is a bioflavonoid that is a potent antioxidant, while bromelain is a protein-digesting enzyme. Bromelain is an enzyme extracted from the pineapple stem. Bromelain helps increase body absorption and helps support good health. Immune System - Quercetin helps ensure a proper immune response, inhibits the formation of free radicals, and promotes circulatory health. Research shows that quercetin may also support healthy respiratory function by maintaining a healthy balance of immune system cells within the respiratory system.