Broncolin Honey Syrup 11.4 oz is a dietary supplement made with honey propolis and natural plant extracts. Propolis is a resinous substance that bees produce from materials collect from tree buds. Rich in flavonoids a class of antioxidants propolis has a long history of use as a natural treatment to improve your health. As a natural anti-inflammatory agent Propolis is the best option. Created by bees to protect hives against microbes and bacteria ?propolis?is a unique substance that enhances immune function and offers antioxidant activity. Antioxidant and Anti-inflammatory Healthy and Effective.