Four Substances Soup can be taken before or after menstruation and needs to be avoided during menstruation. Four Substances Soup tonifies blood without stagnating it, moves blood without breaking it, disperses in tonifying and collects in dispersing. It is best to drink Four Substances Soup after menstruation is cleared, as it has a certain tonic effect. Four Substance Soup has the effect of tonifying and regulating blood, and is mainly used for treating blood deficiency and stagnation (deficiency of blood in the body), which can be seen in dizziness, palpitations (accelerated heartbeat, often accompanied by panic), insomnia, and lack of color, or irregular menstruation in women with low or closed menstruation, and pain in the umbilical cord and abdomen, with a pale tongue and a thin, stringy, or astringent pulse. The contraindications and adverse effects of Si Wu Tang are not clear, and people with blood stasis should use this formula with caution. Although Four Substance Soup has a good tonic effect, but must be under the guidance of a professional doctor according to the symptoms of the application of addition and subtraction, not blindly taken by themselves.