Dayin-35, or ethinyl estradiol cyproterone tablets, usually cause menstruation about 3-7 days after stopping the medication. Daying-35 is a combination of estrogen and progesterone, which is effective in preventing pregnancy and regulating the menstrual cycle. Daing-35 is usually taken orally from the fifth day of menstruation and is taken regularly for about 21 consecutive days. If patients do not take it regularly and stop taking it intermittently, it may lead to abnormal vaginal bleeding during the menstrual period and may not achieve the expected effect of the drug. During the administration of Dayin-35, menstruation usually occurs about 3-7 days after stopping the drug. If menstruation still does not occur on the 8th day after stopping the medication, it is recommended that the patient go to the hospital in time for a blood test for hormone 6 or ultrasound to see the ovarian function and endometrial condition, and to give appropriate treatment. In addition, patients should pay attention to regular work and rest during the treatment with TAIN-35, and maintain a good and stable mood. If you miss a dose, take it in time and do not stop taking it.