Yutin is one of the emergency contraceptive pills, and the method of taking it is to take one pill orally within 72 hours after intercourse, and then another pill 12 hours later, so that the purpose of contraception will be achieved. But the emergency contraceptive pill in the clinical contraceptive effect does not reach 100%, so not all people who take the emergency contraceptive pill, will play a 100% contraceptive effect. Do not use the emergency contraceptive pill as a regular contraceptive method in your daily life, because the side effects are really very big and can cause corresponding effects on liver and kidney functions and on endocrine, so take the emergency contraceptive pill carefully. It is recommended to use condoms for contraception in daily life, and if you do not intend to get pregnant for a long time, it is recommended to use IUDs for contraception.