Bee propolis (which is added to Bioceuticals BioBee’s® fresh royal jelly capsules is a sticky substance that bees make from the barks of trees and from their own salivary secretions. Propolis is used by the bees to repair damage to their hives and to seal them from invaders. It has a long history of medicinal use in Europe and is found naturally in honey.
Test tube studies have found propolis to be active against a variety of microorganisms, including bacteria, viruses, and protozoans.