First of all, it will cause some discomfort to the gastrointestinal tract, such as diarrhea, abdominal pain, nausea, vomiting and other symptoms. Secondly, it can lead to endocrine disorders, such as menstrual disorders, early or late periods, reduced menstrual volume or even amenorrhea, and if emergency contraceptives are taken for a long time, it can also affect conception and infertility. Excessive use of emergency contraceptives can affect the metabolism of protein, fat and sugar in women, leading to high blood pressure and arteriosclerosis. Emergency contraceptives can also stimulate women’s blood clotting function, which can lead to thrombotic disorders. Emergency contraceptive pills can be very harmful to women, and it is recommended to take them in strict accordance with the instructions or take other forms of contraception to reduce the side effects of the drug.