This product has antitussive and expectorant effects. Antitussive effect is to suppress the cough center; The expectorant effect of this product is related to promoting the secretion of respiratory glands and dissolving acid mucoglycan in sputum. It also has anti-inflammatory, anti-allergic and immune-enhancing effects. Staphylococcus aureus, diplococcus pneumoniae and pseudomonas aeruginosa also have antibacterial effects. For chronic bronchitis and other phlegmatic respiratory diseases (refer to relevant literature)