Mifepristone has the effect of killing the embryo, ectopic pregnancy embryo is small, you can take mifepristone, promote embryonic death. Mifepristone is often used after unprotected sex or contraceptive failure within 72 hours, the remedy to prevent pregnancy, in addition, mifepristone has the role of antagonizing progesterone and promoting embryonic death, so it is used in the conservative treatment of ectopic pregnancy. During the administration of mifepristone, patients may experience adverse reactions such as nausea, fatigue, lower abdominal pain, dizziness, and breast tenderness. The drug is contraindicated in people who are allergic to the components of mifepristone, suffer from severe liver, kidney, heart disease and adrenocortical insufficiency. Note that mifepristone should be used under the guidance of a doctor, avoid unauthorized use of the drug to avoid adverse effects. If the patient has an ectopic pregnancy, it is recommended to consult a doctor in time, under the guidance of the doctor, improve the relevant examination, clarify the cause of the disease, symptomatic treatment.