Four Substance Soup can get rid of spots through addition and subtraction. Spots are called sallow spots in Chinese medicine. The onset of the disease is mostly related to the spleen, kidney and liver. When the patient’s disease is characterized as qi stagnation and blood stasis, it can be treated by adding peach kernel and safflower on top of Four Substance Soup, i.e., adding and subtracting peach kernel and safflower to the Four Substance Soup.
The formula uses Radix Rehmanniae Praeparata to nourish Blood and nourish Yin, Radix Angelicae Sinensis to invigorate Blood and harmonize Blood to enhance the effect of Radix Rehmanniae Praeparatae in tonifying Blood, and Radix Paeoniae Alba to soften the Liver, astringent Yin, and nourish Blood to slow down the urgency of the problem; and Rhizoma Ligustici Chuanxiong, which is a qi medicine for Blood and is especially good at moving qi to invigorate Blood, to make the medicines tonifying Blood and not stagnant, and the four medicines combined to nourish and regulate Blood. Peach kernel and safflower are both blood-activating and menstruation-regulating medicines, both of which can dissolve blood stasis and activate blood circulation to relieve menstruation and pain. In addition, the medicines should be added or subtracted appropriately according to the different manifestations of the patient, for example, when there is dysmenorrhea, it is possible to add Wu Yao and Xiang Guan, and so on. Therefore, Si Wu Tang has the function of removing spots after addition and subtraction. If you want to be treated by this formula, you should consult your doctor to determine whether it is suitable for you to use this medicine, and take it according to the doctor’s instruction.