It is recommended not to take Panax notoginseng during menstruation because Panax notoginseng is a kind of traditional Chinese medicine with the function of activating blood circulation and removing blood stasis. If a woman used to have relatively heavy menstrual flow, taking Panax notoginseng during menstruation will lead to more menstrual flow as well as prolongation of menstrual period, and in severe cases, it may lead to hemorrhage, which may cause anemia or even life-threatening condition due to excessive bleeding, and therefore it must be taken with caution. If there are cases of reduced menstrual flow and poor menstrual discharge due to stagnation of qi and blood stasis caused by emotional depression and mental stress, or if there is qi and blood deficiency leading to scanty menstrual flow and pale menstrual flow, it is recommended that Panax ginseng be taken in small quantities and in a reasonable manner under the guidance of a doctor, as it has the effect of tonifying qi, nourishing the blood, activating the blood and clearing up the channels, which can avoid the occurrence of adverse reactions. It is better to take Panax ginseng on an empty stomach, but women with poor gastrointestinal function are advised to take it half an hour after meals.