Xanthoparmelia Scabrosa

Scientific Summary

Xanthoparmelia scabrosa is a crustose lichen that grows on rocks and tree bark. It is traditionally used to soothe mild respiratory inflammation—such as coughs, bronchitis, and upper‑airway infections—and to relieve digestive discomforts like dyspepsia and diarrhea. Because the lichen contains compounds that can affect liver function, prolonged use should be avoided, high doses are not recommended, and it should be taken only under a clinician’s guidance, especially during pregnancy, lactation, or if you have liver disease.

Source: WHO Monographs on Selected Medicinal Plants (Vols 1-3), Trease & Evans Pharmacognosy 16th ed