The possible hazards of taking Four Substances Tang are not yet clear. Four Substance Soup has the effect of tonifying and regulating blood, and is used for treating blood deficiency and stagnation (deficiency of blood in the body), with symptoms such as dizziness, palpitations, insomnia, lack of color, or irregular menstruation, low volume or closed menstruation, and pain in the umbilical cord and abdomen, etc. In this formula, Radix Rehmanniae is sweet, warm and thick, and enters the liver and kidney. In this formula, Radix Rehmanniae Praeparata is sweet, warm and thick in flavor, entering the liver and kidney, moist and greasy in texture, and is the key medicine for nourishing Yin and tonifying Blood; Radix Angelicae Sinensis tonifies Blood and Blood, not only replenishes the strength of Blood, but also promotes the stagnation of the camping Blood; Paeonia Lactiflora nourishes Blood and converges the Yin, softens the Liver and eases the urgency of the problem; Rhizoma Ligustici Chuanxiong activates Blood and promotes the movement of Qi, so as to make all the medicines tonifying the Blood without stagnating Blood. When discomfort occurs, one should consult a doctor in time and choose medication under the guidance of the physician’s diagnosis, and should not use medication on one’s own in order to avoid delaying one’s condition.