Emergency contraceptive pills can usually be taken 4 to 6 hours after drinking alcohol. Emergency contraceptive pills are preparations containing levonorgestrel, which acts as a contraceptive by stopping or delaying the release of egg cells. For women who have been drinking alcohol, it is recommended to take the pill 4~6 hours after drinking, after the alcohol has been partially metabolized, so as not to affect the contraceptive effect. It is also important to note that emergency contraceptive pills are suitable for emergency contraception after unprotected sex and do not ensure 100 percent effectiveness. Moreover, the drug contains a large number of progesterone agents, which can easily lead to endocrine disorders and irregular vaginal bleeding, menstrual disorders and other undesirable manifestations. For women who do not need to have children, it is recommended that they use condoms, take short-acting contraceptive pills regularly under the guidance of a doctor, or use intrauterine devices to prevent pregnancy.