Postcoital contraceptive agents, also known as emergency contraceptive pills (ECPs) or morning-after pills, refer to medications that are used to prevent pregnancy after unprotected sexual intercourse or contraceptive failure. These agents are typically taken within a specific timeframe following sexual intercourse, usually within 72 hours, although some newer formulations may extend this window up to 120 hours.
Postcoital contraceptive agents work through various mechanisms to prevent pregnancy. Commonly used ECPs contain a synthetic hormone called levonorgestrel, which prevents ovulation, fertilization, or implantation of a fertilized egg into the uterine lining. These pills are highly effective when taken as directed, reducing the risk of pregnancy by up to 89%.
It is important to note that postcoital contraceptive agents are not intended for regular contraception and should be used in emergency situations only. They do not protect against sexually transmitted infections (STIs).
Side effects of using these agents may include nausea, breast tenderness, fatigue, and changes in menstrual bleeding patterns. Although they are generally safe, individuals with certain health conditions, such as liver problems or a history of blood clots, should consult with a healthcare professional before using them.
In conclusion, postcoital contraceptive agents are medications used to prevent unwanted pregnancies after unprotected sexual intercourse. They are most effective when taken within a specific timeframe and should not be used as a regular contraceptive method. Consultation with a healthcare professional is advised for appropriate and safe use.
