The main function of Compound Levonorgestrel Tablets is contraception. Compound levonorgestrel tablets contain levonorgestrel and ethinyl estradiol as the two main ingredients, of which levonorgestrel can prevent the implantation of the pregnant egg, increase the viscosity of cervical mucus, and prevent sperm from penetrating. Ethinylestradiol inhibits gonadotropin secretion and ovarian ovulation. The combination of these two main ingredients makes Compound Levonorgestrel Tablets have a better contraceptive effect, suitable for oral contraception for women. Adverse effects of levonorgestrel tablets include: early pregnancy-like reactions (e.g. nausea and vomiting, dizziness and drowsiness, lack of appetite), breakthrough bleeding (often occurs when the drug is missed), amenorrhea, depression, headache and fatigue, weight gain, facial hyperpigmentation, and hepatic impairment, etc. Use of the drug by women who are smokers at the age of 35 years will increase the risk of ischemic heart disease. Compound levonorgestrel tablets should be contraindicated in women with breast cancer, irregular vaginal bleeding, abnormal liver function or recent history of liver disease or jaundice, cancer of the reproductive organs, cerebrovascular accident, deep vein thrombosis, hypertension, cardiovascular disease, diabetes mellitus, hyperlipidaemia, psychiatric depression and women over 40 years of age. Breastfeeding women should not start taking the medicine until half a year after delivery. During the use of the drug must strictly follow the doctor’s instructions or instructions, and need to annual physical examination, once there is pregnancy, hypertension, liver function abnormalities, mental depression, ischemic heart disease, thromboembolic disease, visual disorders, to stop the drug in a timely manner.