There are several reasons why menstruation does not come after the patient takes herbs for regulating menstruation. The first point is that there is a mistake in the direction of medication, for example, menstrual disorders or absence of menstruation in the type of weakness of qi and blood, it is difficult to achieve efficacy simply by using drugs that regulate liver and spleen menstruation. The second point is that it takes time to maintain the efficacy of the medication. The herbal medicine for menstrual disorders can be used for about 1 month or longer, which requires patience. The third point is that it may be related to normal aging. After the age of 45, the effect of menstrual drugs is very poor, and menstruation may occur due to premature aging of women. Clinical treatment of menstrual adjustment with medication is best done under professional guidance.