Taking Gui Zhi Fu Ling Pill discharges black blood, which is a normal physiological phenomenon, not necessarily menstrual blood. Gui Zhi Fu Ling Pill is a commonly used formula in traditional Chinese medicine. It has the effect of activating blood circulation, resolving blood stasis and eliminating symptoms. It is used for women who have a host of symptoms (women with lumps in the lower abdomen), or blood stasis and menstrual closure, menstrual cramps and abdominal pain, postnatal discharge. This drug adverse reactions, contraindications are not clear, note that pregnant women should be careful with this drug. However, if you are suffering from amenorrhea, after taking Gui Zhi Fu Ling Pill, it is easy to cause blood clots to be discharged from the body, showing black blood. This is a normal physiological phenomenon, usually bleeding for a period of time, can disappear by itself. If you have normal menstruation and take this medicine on the day of your menstruation, then the bleeding may be menstrual blood, the duration of which is the same as that of menstruation. If there is abnormal bleeding and other phenomena, go to the hospital in time to follow the doctor’s advice to cooperate with the treatment. Keep the pubic area hygienic and change underwear frequently.