In the current more widely used emergency contraceptive pill is Yutin, the price of Yutin between$12.9 and$14.00. The emergency contraceptive pill is mainly used in the case of no measures, within 72 hours after intercourse oral. The main contraceptive mechanism is to inhibit ovulation, and because the emergency contraceptive pill is highly effective progestin, can make the endometrium abnormally thickened, which prevents the fertilized egg from being laid, so as to achieve the purpose of contraception. However, the emergency contraceptive pill has its side effects, such as causing withdrawal bleeding or disruption of the menstrual cycle, so it is not recommended to take oral emergency contraception as a last resort. If you are not planning to get pregnant, it is recommended to use condoms.