Aster has the effects of moistening the lungs and lowering the qi (moisturizing the lungs to bring down the upwardly charged lung qi), eliminating phlegm and relieving cough, and has the effect of treating phlegm and wheezing and coughing and other conditions. The contraindications of taking Aster are not clear at the moment, and those with solid heat should be cautious in taking it. Aster is warm in nature, bitter and pungent in taste, and belongs to the lung meridian. It is pungent, bitter, warm and moist without being dry, and is good at opening up the lungs, resolving turbid phlegm and relieving coughs, and moistening the lungs and lowering the qi. Aster can be used for coughs, regardless of external and internal injuries, the duration of the disease, deficiency, cold and heat. Aster is especially suitable for people with congested lung qi, cough with excessive phlegm, and unpleasant sputum. The adverse effects and contraindications of taking Aster are not known. It is recommended that Aster be used under medical supervision.