Mifepristone is cleared from the body in about 3 days, and most people reach the peak of the effective concentration of the drug in about 12 hours after taking mifepristone, so the drug is often used for emergency contraception, and is taken orally within 72 hours after intercourse to inhibit ovulation or cause abnormal thickening of the endometrium for contraceptive purposes. In addition, mifepristone is more commonly used clinically for early pregnancy termination, for example, if you want to terminate a pregnancy between 5 and 7 weeks, you can take mifepristone orally and give it under the guidance of a doctor. In clinical practice, if you are breastfeeding, it is recommended to stop breastfeeding when taking this drug and consider breastfeeding after 3 days.