Natural extract based on Propolis. This substance produced by bees, from the resins of trees has a myriad of medicinal properties, such as antibiotic, healing, anti-inflammatory, analgesic, anti-allergic, epithelializing and anesthetic, among others. It is often used to fight against viruses and bacteria responsible for colds and flu. It also strengthens the immune system and helps to prevent the progression of throat and larynx infections, relieving pain and preventing infections.