Jin Yuting’s effect is mainly to inhibit ovulation and bedtime, as well as to slow down the peristalsis of the fallopian tubes and the development of the endometrium out of sync, thus playing the role of contraception. Jin Yuting’s main ingredient is levonorgestrel, which contains a large amount of progestin ingredients, taken within 72 hours after unprotected sex, the shorter you take after sex, the better the contraceptive effect. After taking this contraceptive drug, there will be retreating bleeding within a week, but it is not the real arrival of menstruation. A small number of women may also experience gastrointestinal discomfort such as headache, dizziness, nausea and vomiting after taking the drug, and it is recommended that two hours before and after taking the drug, it is best to fast and abstain from water to ensure the absorption of the drug. It is impossible to take emergency contraceptives frequently, generally not more than three times in a year, to avoid the occurrence of menstrual disorders.