Motherwort has the effect of activating blood circulation and regulating menstruation (regulating menstruation by activating blood circulation). Drinking motherwort when having menstruation can help relieve menstrual cramps caused by blood stasis. Motherwort, also known as Kun Cao, has the effects of activating blood circulation to regulate menstruation, diuretic to reduce swelling, and clearing heat and detoxification (removing heat and toxins from the body). In clinical practice, it can be used to treat menstrual disorders, dysmenorrhea, amenorrhea, dyspareunia, edema, carbuncle sores and poisons. When a woman is menstruating, drinking motherwort has the effect of invigorating blood and can help relieve dysmenorrhea caused by blood stasis. It is not recommended for menstruating women who do not have symptoms of blood stasis, which may lead to heavy menstruation. Note that it is forbidden to be taken by those with deficiency of Yin and Blood, heavy menstruation and dilated pupils. Avoid iron. Use with caution in pregnant women. Patients who need to use the medicine should be instructed by a doctor.