At 10 PM, I took the birth control pill. When is it effective?

Patient's question:

No

Doctor's answer:

Emergency contraception pills mainly include Yuting, Nuoshuang, Baoshiting, and Mifeiposide tablets. Generally, the first pill is taken within 72 hours after intercourse, and another pill is taken 12 hours later. The earlier it is taken, the better the effect.