Cool and Transform Phlegm-Heat (qing re, hua tan re)
Treat phlegm-heat conditions, especially cough with hot phlegm (i.e. thick, difficult to expectiorate, yellow, brown or green sputum). In such cases, a herb such as qian hu (Peucedanum praeruptorum) may be used. Herbs in this category may also relieve other conditions stemming from phlegm-heat including goitre, nodules and convulsions.