Herbal compositions that have a soothing effect bring a harmonizing and nourishing effect to the "Shen" (the psyche).
In TCM, Shen controls mental activities and functions such as consciousness, emotion, spirit, will, thought, memory, etc.. Shen originates in the prenatal and genetical Qi and essences, and is hosted in the Heart. Shen must be continuously supported and noursihed by postnatal Qi, as well as by Blood, Jin-Ye (body fluids), and Essence. Shen belongs to the category of Yang, while all of the nutritional substances belong to that of Yin. Yin and Yang must always stay balanced and keep in harmony, otherwise Shen will suffer. The main causes of Shen problems are overactive Yang, deficient Yin, or both.