There is no such thing as five contraindications to drinking yellow essence in water. Yellow essence should not be used by people with spleen deficiency and dampness obstruction, phlegm-dampness congestion, or qi stagnation and abdominal fullness. Huang Jing is the dried rhizome of Dian Huang Jing, Huang Jing or Multiflora Huang Jing of the lily family. It is sweet in taste and flat in nature, and belongs to the spleen, lung and kidney meridians. It has the effects of tonifying qi and nourishing yin, strengthening the spleen, moistening the lungs and benefiting the kidneys, and is used for deficiency of qi in the spleen and stomach, tiredness and fatigue, dry mouth and little food, dry and coughing cough in the lungs, coughing up blood with exertion, deficiency of essence and blood, soreness of the lumbar and knee (a feeling of soreness and weakness of the lumbar and knee areas), and premature graying of the whiskers and hair. Huang Jing is usually used in decoction, it is difficult to achieve the therapeutic effect by soaking in water, and its adverse effects are not yet clear. Because of the sticky nature of this product, it is easy to help dampness and congestion of qi, therefore, it should not be used by people with spleen deficiency and dampness, phlegm-dampness and congestion of qi, or qi stagnation and fullness of the abdomen. If you have a need for medication, it is recommended to use it under the guidance of a professional physician, not blindly self-medication.