San Cai Sealing Marrow Dan is a formula for astringency, which is effective in nourishing Yin and lowering fire (nourishing Yin essence and lowering fire), nourishing Blood and fixing essence, and is mainly used for people with Yin deficiency and fire (deficiency of Yin essence in the body and the appearance of hyperactive fire), and insufficient Essence and Blood. Among them, San Cai refers to the three talents of heaven, earth and man, i.e. tian dong, dihuang and ginseng. In this formula, tian dong nourishes the kidney yin and clears the lung fire from the lower part of the body, dihuang replenishes the essence and blood of the kidneys, and ginseng replenishes qi to tranquilize the spirit and benefit the intellect (stabilizes the spirit and mind and promotes the development of the intellect). When this formula is used to nourish Yin and reduce fire, it can treat symptoms such as dry throat and mouth, irritability and insomnia, waking up with dreams, red tongue and thin pulse, etc. When this formula is used to nourish Blood and fix essence, it can treat symptoms such as dreaming and loss of semen, dizziness and dizziness, lumbar and knee soreness, and tiredness and fatigue of the body and the mind (lack of mental strength) caused by insufficient blood and essence. San Cai Seal Marrow Dan is usually taken by crushing the drug and making it into pills with rice paste. Considering its overall nature of being cold, it is not recommended to be taken by people with a cold constitution. In addition, it is not recommended to consume with fish and shrimp to avoid affecting the efficacy of the drug. San Cai Sealed Marrow Dan should be taken in accordance with the doctor’s instructions, and should not be taken blindly on its own, in order to prevent the symptoms, delay or aggravation of the disease.