Contraceptive pills can be divided into emergency contraceptives, short-acting contraceptives and long-acting contraceptives, Yutin contraceptive pill that is levonorgestrel tablets, is a common female emergency contraceptive pill, the main component is levonorgestrel. In general, the temporary once of taking, for women’s harm may be menstrual changes, vomiting, nausea and other adverse reactions, but if frequent, long-term use, the harm to women may lead to abnormal uterine bleeding and even complications of other gynecological diseases: 1, general adverse reactions: any emergency contraceptive pills, including Yuktin, usually lead to changes in the menstrual cycle, mostly manifested in the month of taking the pill or next 2, less severe adverse reactions: some people may experience headache, dizziness, breast pain, abdominal pain, nausea, vomiting, fatigue, fatigue and other symptoms, generally do not need to deal with, can gradually disappear after 24 hours, if the symptoms can not be relieved for a long time or even aggravated, you should go to the hospital or consult a physician; 3, more severe adverse reactions Yuktin may cause abnormal bleeding from the uterus, if the bleeding does not stop on its own, you should be alert to the possibility of ectopic pregnancy and need to go to the hospital promptly. In addition, frequent and long-term use may lead to thinning of the uterine wall, habitual abortion, which will have an impact on future conception again. Patients should be aware that any contraceptive pill can have an impact on women’s health and should be used with caution. It should be contraindicated for women with diabetes, abnormal liver function and breast cancer. If you are not preparing for pregnancy in the near future, you should use safe and effective contraceptive measures when having sex.