Common Usage: Stops cough, dry throat, coughing with blood. Description: This formula is intended for chronic lung problems in which there has been a long-term cough, cough with blood or chronic dry, sore throat. It helps to moisten dry lungs and replenishes vital fluids in the lungs and throat. In the Chinese five element system, metal is associated with the lungs, and this formula strengthens the function of the kidneys (water in the five element system) which supresses the depletion of metal (weakness of lungs; lung Yin deficiency). Symptoms can include chronic cough, coughing with blood, wheezing, night sweats, a red, cracked tongue, hot palms and soles of the feet, dry and/or sore throat. Chinese diagnosis: This is called lung yin deficiency along with kidney yin deficiency. When the kidney yin is deficient, it can't steam water to cool the lungs and as a consequence the lungs become deficient and dry, causing a dry cough. This formula moistens the lungs and cools heat that causes coughing and sore throat. This product can be used long-term to resolve the above conditions.