When is it effective to take emergency contraceptive pills?
I had unprotected sex two days ago. Is it too late to take the contraceptive pill now? When should I take the emergency contraceptive pill to ensure its effectiveness?
Doctor's answer (1)
Emergency contraceptive pills are a remedial measure for unprotected sexual intercourse or contraceptive failure. The best time to take them is within 72 hours after intercourse, with earlier administration being better. The main types available on the market are levonorgestrel-based and mifepristone-based medications. Levonorgestrel-based pills should be taken as soon as possible after sexual intercourse, while mifepristone-based medications must be used under a doctor's guidance.
Emergency contraceptives work by preventing or delaying ovulation, interfering with the fertilization process, and preventing implantation of the fertilized egg. However, even when taken within 72 hours, their effectiveness rate is only between 70% and 85%, meaning they are not 100% reliable. They should not be used frequently as a regular contraceptive method, as this may affect the menstrual cycle and cause endocrine disorders.
After using emergency contraception, reliable long-term contraceptive methods should be adopted, such as condoms, oral short-term contraceptives, intrauterine devices (IUDs), etc. In addition, regular gynecological examinations should be conducted to detect and address any issues promptly.
If any discomfort occurs after taking emergency contraceptive pills, seek medical attention immediately to ensure personal health and safety.
