It is a popular and well-known herbal supplement that supports a healthy menstrual cycle. Breaks blood stagnation, stimulates and invigorates blood circulation, regulates blood, relieves pain. A special patent specifically for menstrual disorders due to blood stagnation, including clots and cramps, irregular periods, difficulty in starting menses or amenorrhea, or prolonged periods. Helpful as extended relief or as symptomatic relief for cramps while they occur.