If you want to drink motherwort during menstruation to regulate your menstrual cycle, you can take it orally from the first day of menstruation. It can be taken orally for ten days as a course of treatment, and the effect can be observed for ten days. At the same time, when taking motherwort orally, the endometrial lining will shed faster, which will cause an increase in menstrual flow, so it must be observed. It can also play a role in regulating the menstrual cycle. However, the effect of one course of treatment is not particularly good, and to achieve better results, three courses of oral treatment, that is, three months, can be observed. The combination of motherwort can not achieve the purpose of treating irregular menstruation after oral administration. As far as possible, you should also take a blood test for endocrine hormones to rule out any abnormalities in hormone levels, so that you can change to other drugs for treatment and return to a normal menstrual cycle to avoid affecting your health.