According to the TCM classic “Huangdi Neijing – Lingshu – Hai Lun”, the brain is the sea of marrow. Therefore, Chinese medicine believes that tonifying the essence and filling in the marrow can replenish the medulla oblongata, so it is common to use Yuan Zhi and Radix Rehmanniae Praeparata. Yuan Zhi has the effects of tranquilizing the mind and promoting intellectual development, dispelling phlegm and opening the orifices (removing phlegm to open the orifices). It is mainly used in the treatment of insomnia, palpitation (rapid heartbeat, often accompanied by panic), dysphoria (violent heartbeat, panic and restlessness), and amnesia. This product is afraid of pearl and veratrum, and is not used with boxing ginseng; it is used with caution for those with solid heat or phlegm fire, as well as those with gastric ulcers or gastritis. Radix Rehmanniae Praeparata has the effect of nourishing yin and tonifying blood (nourishing the blood in the body), benefiting the essence and filling the marrow (tonifying the essence and marrow). It is used in treating yin deficiency of the liver and kidneys (deficiency of yin fluid in the liver and kidneys), lumbar and knee soreness (a feeling of soreness and weakness in the waist and knees), seminal emission, internal heat and thirst (internal heat accompanied by symptoms of overeating, excessive drinking, and excessive urination), etc. It is also used in treating the symptoms of blood deficiency in the liver and kidneys. Caution should be exercised if the spleen and stomach are weak. Note that Chinese medicine treatment should be based on evidence, please use the above medicines under the guidance of a professional Chinese medicine practitioner, and do not use the medicines on your own.