Levonorgestrel tablets, indicated for use as emergency contraception in women, i.e., when unprotected or other contraceptive methods fail by chance, are contraceptive pills. The contraceptive effect is usually achieved by using it in combination with estrogen. Clinically levonorgestrel can also be used to treat diseases, but it should be taken orally under medical supervision. Contraindications: It is contraindicated in patients with malignant tumors, cardiovascular and cerebrovascular diseases, and patients with psychiatric abnormalities need to use it under the guidance of a doctor. It is worth noting that levonorgestrel tablets should not be used as a regular contraceptive for long-term use. Moreover, it is strictly forbidden to be used by children under 16 years old, people with severe liver insufficiency and those who are allergic to this product. Also, it is recommended to take the medication according to the doctor’s prescription and not to use it privately.