Low menstrual flow and motherwort granules can regulate menstruation. It is better to start taking motherwort granules orally one week before the onset of menstruation. Because of its effect of activating blood circulation and eliminating blood stasis, eliminating swelling and dampness, tonifying qi and nourishing blood, Yi Mu Cao granules can be used to regulate menstruation, and also for the treatment of poor uterine regeneration after abortion and induced labor. Women with low menstrual flow, if it is caused by deficiency of Qi and Blood, Qi stagnation and Blood transport, can start taking Yimu Cao granules orally right before menstruation until the onset of menstruation. If the menstrual flow is low during the period, you can also keep drinking it. If the menstrual flow is high, you should stop taking it during the period. There are many reasons for low menstrual flow in women. If the effect of taking motherwort granules is not good, you should find out the cause of low menstrual flow from your doctor in time and then give symptomatic and effective treatment.