Authentic yellow essence according to the place of origin, the quality of different, the price also varies, authentic yellow essence a catty is probably in the range of 80 ~ 100 yuan. Huang Jing belongs to the yin tonic in the tonic medicine, for the lily family perennial herb Huang Jing, multiflora Huang Jing or Dian Huang Jing rhizome. Huang Jing enters the lung, kidney and spleen meridians. It is sweet and flat in nature. It has the effects of tonifying the center and benefiting the qi (treating qi deficiency by tonifying the spleen), nourishing yin and moistening the lungs (replenishing the yin fluid in the body to nourish the lungs). Huang Jing can be used to treat lumbar and knee weakness, dizziness, yin deficiency and lung dryness (deficiency of yin fluid in the body, resulting in lung dryness not being moisturized), dry cough without phlegm, deficiency of the spleen with little food, and deficiency and winning after illnesses. It should be noted that Huang Jing is contraindicated in people with cold and diarrhea, spleen deficiency with dampness, phlegm-dampness plumpness (stomach distension and discomfort), and qi stagnation. The adverse effects of Rhizoma Polygonati Odorati are not known. Huang Jing is contraindicated in people with a history of allergy to Huang Jing. If needed, please use under the guidance of a professional Chinese medicine practitioner.