Yutin is an emergency contraceptive and should be avoided as many times as possible, because emergency contraceptives are particularly bad and can easily cause gastrointestinal discomfort as well as irregular vaginal bleeding and even menorrhagia. Generally, emergency contraceptives are not used as regular contraceptives and should only be taken occasionally when you have unprotected sex and do not want to get pregnant, in order to prevent adverse effects on your body. The most common contraceptive measures are mainly oral contraceptive pills, intrauterine devices, external contraceptive measures such as: condoms, vaginal condoms and physiological contraception to avoid the fertile period. Emergency contraceptive drugs need to be taken in the right amount to prevent contraceptive failure.