Instructions and Time of Action for Emergency Contraceptive Pills
The method of using emergency contraceptive pills is oral administration, and they are effective within 72 hours after sexual intercourse. The specific details are as follows:
1. Method of Use
Emergency contraceptive pills work by inhibiting the synthesis of progesterone after sexual intercourse, thereby delaying ovulation and preventing the normal union of egg and sperm, achieving the effect of contraception. These pills are typically taken orally, and the exact dosage should be determined according to individual circumstances under the guidance of a qualified physician.
2. Time of Effectiveness
Emergency contraceptive pills are effective within 72 hours after sexual intercourse. The earlier the pill is taken after intercourse, the lower the chance of pregnancy. However, due to hormonal imbalances caused by the medication, some individuals may experience side effects such as delayed menstruation or headaches. These symptoms usually resolve shortly after discontinuing the medication. If symptoms are severe or persist for an extended period, prompt medical evaluation is recommended.
It is advisable to consistently use proper protective measures during sexual activity to minimize the need for emergency contraceptive pills.