The actual effect of Yutin is very good, Yutin is the progestin as the main component of the emergency contraceptive pill, after taking the chance of an unplanned pregnancy or ectopic pregnancy is only about 2%, which is based on the patient must be normal and standardized use of Yutin. Patients must pay attention when using within 72 hours after intercourse, and two tablets when taking the first tablet, need to take the second tablet after 12 hours, the earlier you take the better. If the patient takes yutin more than 72 hours, or take yutin within half an hour of vomiting, the effect of the drug will be greatly reduced, the patient will have a very high chance of unwanted pregnancy. Patients taking Yutin are prone to withdrawal bleeding, or irregular bleeding caused by menstrual disorders, easily confused with pre-eclampsia or ectopic pregnancy, so patients with delayed menstruation or abnormal bleeding need to check whether it is pregnancy.