The common method of morning-after contraception is the emergency contraceptive pill, which generally includes levonorgestrel and mifepristone.
1. Levonorgestrel: belongs to the morning-after emergency contraceptive pill, usually within 72 hours after unprotected coitus to take the first tablet, after 12 hours to take the second tablet. Levonorgestrel is able to change the thickness of the uterine membrane, preventing the sperm from landing on the uterus and achieving the purpose of contraception.
2. Mifepristone: also take 1 tablet within 72 hours after intercourse. Taking it during the first half of the menstrual cycle can inhibit ovulation, and taking it during the second half of the menstrual cycle can cause the uterine lining to fall off, which can also play a role in contraception.
Emergency contraceptive pills do not provide 100% contraception and are extremely harmful to the body, so it is best not to take them more than twice a year. If you do not need to have children, it is best to use condoms or other safe contraceptive measures.