The generic name of Dayin 35 is ethinyl estradiol cyproterone tablets. This product is taken for the treatment of polycystic ovary syndrome is started on the 1st day of menstruation and taken for 21 days. The course of treatment is 3 to 6 months. Ethinyl estradiol cyproterone tablets are commonly used in the treatment of polycystic ovary syndrome. Ethinyl estradiol cyproterone tablets have a strong anti-androgenic effect, can inhibit the secretion of pituitary gonadotropins, so that the body’s testosterone level is reduced, and adjust the menstrual cycle. It is usually taken on the first day of menstruation for 21 days, and menstruation will occur 7 days after stopping the medicine, and the general course of treatment is 3 to 6 months. Contraindications and adverse reactions and precautions: severe cardiovascular disease, endocrine diseases, hematologic disorders, malignant tumors, diabetes mellitus, lactation, acute and chronic hepatitis, hyperthyroidism and other contraindications. When applying ethinyl estradiol cyproterone tablets for the treatment of polycystic ovary syndrome, when physical discomfort occurs, go to the hospital for timely examination and timely diagnosis and treatment under the guidance of a doctor.