Patient's question:
My girlfriend took the emergency contraceptive pill (the pill for post-coital contraception) after the event, but I'm still worried whether it is truly effective. Is it 100% effective?Doctor's answer:
Hello:Emergency contraception is a "emergency measure" taken after unprotected sex or when it is realized that contraception has failed (condom rupture, slippage, missed birth control pills, etc.) to prevent unintended pregnancy. There are mainly two types of emergency contraception pills: one is mifepristone tablets, marketed as "Fernier," which has the advantage of requiring only one tablet within 72 hours after sex, with a contraceptive effectiveness of over 99%. Low-dose mifepristone was approved by the National Drug Administration in the early 21st century for emergency contraception. The other is levonorgestrel tablets, marketed as "Yuzhenting" and "Anting," which is characterized by taking two tablets within 72 hours after sex, with a 12-hour interval, and has a contraceptive effectiveness of over 98%, having been used for emergency contraception since the 1990s.