Juncaceae consists of 8 genera and about 464 known species. Juncaceae species are used as a source of therapeutic compounds in traditional medicine. Several Juncus species are used in traditional medicine as sedative and to treat different health disorders, as for example insomnia. These health benefits can be ascribed to the presence of different classes of compounds such as flavonoids, coumarins, terpenes, sterols, phenolic acids, stilbenes and phenanthrenes. Additionally, Juncaceae family represents an abundant source of phenanthrenes.