Coughing up yellow phlegm is not suitable for taking Mai Wei Di Huang Wan. Mai Wei Di Huang Wan is suitable for conditions such as hot flashes (a burst of fever) due to deficiency of yin in the lungs and kidneys, night sweating (abnormal sweating after going to sleep, sweating stops after waking up), dry throat and cough, dizziness and tinnitus, lumbar and knee soreness (a feeling of soreness and weakness of the lumbar and knee areas), and yellow phlegm is not recommended. Coughing up yellow phlegm is mostly suggestive of lung heat, phlegm heat and other causes. Yellow phlegm can be treated with proprietary Chinese medicines such as Snake Gall Bladder and Pei Pei Pei Loquat Cream, Clearing Qi and Resolving Phlegm Pill, Tangerine Red and Resolving Phlegm Pill, and so on, depending on the condition and after identifying the symptoms under the guidance of a doctor. Cough yellow phlegm with symptoms of lung and kidney yin deficiency, under the guidance of a doctor to identify the symptoms of yellow phlegm at the same time take the medication with the maiwei dihuang pill to regulate, is also possible. Because the individual condition is different, the choice of drugs with is also different. The medication should be taken under the guidance of a physician, do not use without authorization, so as not to cause adverse consequences.