Nausea after taking mifepristone is mainly due to the side effects of the drug, mifepristone may cause nausea, vomiting, anorexia, dizziness or vaginal bleeding and other corresponding side effects. If nausea occurs, you can contain plums or eat a small amount of snacks to relieve the symptoms of nausea. If vomiting occurs within 20 minutes after taking mifepristone, it is possible that the drug has been excreted with the vomitus and has not been absorbed, so it is recommended to take additional doses under the guidance of a doctor in order to achieve the appropriate clinical objectives. In addition, patients who are allergic to mifepristone are not recommended to take this drug for treatment or for termination of pregnancy, and can use other drugs or other methods to terminate pregnancy.