Propolis liquid extract is made from “propolis” or natural resin that bees collect and store in their nests. It is sticky and dark in color and goes through an alcohol-free extraction process.This product contains flavonoids, which are substances that have antioxidant properties and also help inhibit bacteria and fungi.And viruses that occur in the respiratory and digestive systems can prevent and treat stomach and intestinal ulcers, as well as prevent sore throats and colds very well.