Clearing Dryness and Rescuing Lung Soup consists of 9 herbs, which are Ginseng, Licorice, Pei Pa Koa Leaf, Gypsum, Colla Corii Asini, Almonds, Ophiopogon, Humulus, Mulberry Leaf. The efficacy of Clearing Dryness and Rescuing Lung Soup is to clear dryness and moisten the lungs (clearing dryness from the mouth and moisturizing the lungs), nourish yin and benefit qi (nourishing yin and tonifying qi and blood). It can be used in treating dry cough without phlegm, fever and headache, dry mouth and nose, heartburn and easy thirst. In this formula, Mulberry leaf is the principal medicine (the principal medicine refers to the medicine that plays the main therapeutic role for the main disease or the main evidence in the formula), which plays the role of promoting the lungs (promoting lung qi), and it is preferable to choose Mulberry leaf that is harvested after frost in winter. Gypsum and Ophiopogon are the ministerial herbs (ministerial herbs are the herbs in the formula that assist the principal herbs to strengthen the treatment of the main disease or the main symptoms or to treat the concurrent diseases or the concurrent symptoms), which can clear and relieve lung heat, nourish yin and moisten the lungs. In the formula, ginseng, loquat leaf, Colla Corii Asini, apricot kernel and caraway seed are the adjuvants, and licorice is the enabler (enabler refers to the medicines in the formula that have the function of harmonizing all the medicines or leading all the medicines in the formula to the place of illness). If there is phlegm in the cough, Sichuan pei and Gua vulgaris can be added to the original formula to moisten dryness and dissolve phlegm. The specific dosage should follow the doctor’s instruction. When discomfort occurs, one should consult a doctor and choose medication under the doctor’s guidance, and not use medication on one’s own.