Propolis is a sticky substance produced by bees, derived from resinous plant secretions. It is usually enriched with wax, pollen, enzymes, and other substances. Bees use it for sealing and disinfecting the hive.

The ancient Greeks observed the behaviors of bees, introducing the substance at the entrance of the hive for protection against enemies, naming it propolis (pro of the city) due to its defensive property.

One of the most important properties of propolis tincture is its strong antibiotic action. Use it internally to strengthen the body against viruses.