How many types of emergency contraception pills are there, and what are their names?

Patient's question:

No

Doctor's answer:

It is divided into three types: long-acting, short-acting, and emergency contraceptive pills, all of which contain hormones. Emergency contraceptive pills have the highest hormone dosage, and it is generally recommended not to take them more than three times a year. Additionally, long-term use of contraceptive pills can easily cause instability in hormone levels in the body, thereby affecting the menstrual cycle, subsequently impacting ovulation, making it more difficult to conceive.