Emergency contraceptive pills are generally effective in preventing pregnancy.
Emergency contraceptive pills are taken within 72 hours of having unprotected sex, and the earlier they are taken, the more effective they are. When taken, it inhibits ovulation and enhances the consistency of cervical secretions, increasing the resistance of sperm to penetrate the barrier.
For most women who take emergency contraceptive pills, the medication provides a better contraceptive effect. However, because some women are not sensitive to the drug, they may not achieve the contraceptive effect after taking the drug, and there is a possibility of pregnancy.
The main ingredient of emergency contraceptive pills is progestin, which may cause adverse reactions such as breast swelling and pain, irregular menstruation, withdrawal bleeding, etc. It is not recommended to take it regularly because of its strong side effects. The use of emergency contraceptive pills should be strictly in accordance with medical advice.