Contraindications of levonorgestrel tablets mainly include known or suspected pregnancy, patients with gynecological diseases such as ovarian cancer patients and other factors such as abnormal liver function. 1. Known or suspected pregnancy is contraindicated. 2. Some patients with gynecological diseases, including ovarian cancer, malignant lesions of the uterus or cervix, and unexplained abnormal uterine bleeding. 3. Other factors: common with severe liver function abnormalities or recent history of liver disease, jaundice; venous thrombosis; mental depression patients; progesterone-dependent tumors; patients with allergy to the active ingredient, etc. Levonorgestrel tablets are mainly used for contraception, etc. Its adverse reactions mainly include nausea, vomiting, menstrual changes, abnormal uterine bleeding and so on. The use of specific drugs should be under the guidance of a doctor. If there is any discomfort, it is recommended to go to the hospital in time and follow the doctor’s instructions to deal with the treatment.