Mifeprex refers to mifepristone. If a spontaneous abortion expels the gestational sac, but the meconium is not completely expelled, it is necessary to continue taking it; if the meconium has now been completely expelled from the body and the bleeding is gradually decreasing, the medication may be discontinued. If after taking mifepristone, it is found that the gestational sac is being expelled, but the meconium is not completely expelled from the body at present and there is still a tendency to bleed, it is usually recommended to continue taking it. The drug has the effect of promoting uterine contraction, during the use of the drug is conducive to the expulsion of meconium, and reduce the amount of bleeding. If the pregnancy sac has been expelled for a relatively long time, and the meconium has basically been expelled from the body, and the bleeding is gradually decreasing, it can be discontinued under the guidance of the doctor. Before taking mifepristone, you need to know that it is forbidden to be allergic to the components of the drug, it is forbidden to be used by people with heart, liver and kidney diseases, and it is forbidden to be used by people with the occurrence of glaucoma and asthma. Use with caution in cases of airway obstruction and anemia. After using mifepristone, there may be dizziness, nausea, vomiting and other symptoms, usually after stopping the drug will be relieved by itself, without special treatment. If you need to take mifepristone to terminate pregnancy, you should do so under the guidance of a professional physician, and should not use the drug without authorization to avoid accidents.