Huang Jing is usually decocted in a common amount of 10-15g. Huang Jing, has the effects of nourishing Yin and moisturizing the lungs (nourishing the lungs by replenishing the fluid in the lungs), tonifying the spleen, benefiting the vital energy, nourishing the kidney and filling up the essence. It is used for treating yin deficiency and laborious cough, lung dryness and cough, spleen deficiency and fatigue, poor appetite and dry mouth, thirst; kidney deficiency and lumbar and knee soreness and weakness (a feeling of soreness and weakness in the lumbar and knee areas), impotence and spermatorrhea, tinnitus and darkness in the ears and eyes, premature whitening of the beard and hair, physical weakness and thinness, and wind, mange and ringworm diseases. Huang Jing is contraindicated in those with cold and diarrhea, phlegm-dampness and plumpness (stomach distension and discomfort) and stagnant Qi. The adverse effects and contraindications of Huang Jing are not known. The drug should be used after identification and treatment by a Chinese medicine practitioner and should not be used on its own to avoid risks.