In the clinical emergency contraceptive pills are more effective and have fewer side effects is Yutin or gold Yutin, which is recommended to be taken orally within 72 hours after intercourse to achieve the effect of contraception. If the oral is Yutin, take one tablet orally within 72 hours, and then take another tablet 12 hours later. If you are taking Gold Yutin, you can take only 1 tablet within 72 hours. But it is recommended that the emergency contraceptive pill should not be taken as a regular method of contraception, because the side effects of the emergency contraceptive pill is still relatively large, can lead to menstrual disorders, can make the ovaries normal ovulation function is destroyed, so not as a last resort, do not take the emergency contraceptive pill contraception, it is recommended that the best condom contraception or can be contraceptive IUD.