There are no six kinds of people should not eat yellow essence. However, it should be noted that this product is nourishing and greasy in nature, and is prone to help dampness and stagnation of qi. Therefore, it should be used with caution for those with spleen deficiency and dampness obstruction and phlegm-dampness congestion. Huang Jing has the effects of nourishing yin and moisturizing the lungs (nourishing the lungs by replenishing their fluid), tonifying the spleen, benefiting the qi, and nourishing the kidneys and filling the essence. It is used for treating yin deficiency and coughing, lung dryness and coughing, spleen deficiency and fatigue, low food intake and dry mouth, and thirst; kidney deficiency with lumbar and knee weakness (a feeling of soreness and weakness of the waist and knees), impotence and spermatorrhea, tinnitus and darkness of the eyes, premature whitening of the beard and hair, and weakness and thinness of the body. Adverse effects of Huang Jing are not known. During the period of administration, diet should be light, avoiding smoking, alcohol and spicy, cold and greasy food. If you need to use Huang Jing, it must be used under the guidance of a professional doctor.