It is used almost exclusively in the treatment of pulmonary diseases. Even in moderate doses, it is a powerful diaphoretic and will cause profuse sweating in the patient.  The herb is also an astringent and antiseptic and will soothe an inflamed bronchial mucosa and promote the rapid healing of an ulcerated throat. The most valuable aspect is its use as an expectorant.  It will quickly remove mucous from the lungs and bronchi, and as the herb also produces a slight vasodilative action, it makes breathing easier and reduces coughing.