Eusebio is a contraceptive pill, which is a combination of estrogen and progestin. The purpose of taking Eusebio is to prevent pregnancy or to adjust the menstrual cycle. Withdrawal bleeding will occur after 21 days of taking Eusemide, which is a normal phenomenon to simulate an artificial cycle for menstruation. On the fifth day of withdrawal bleeding, you can take the next cycle for contraception or adjust your menstrual cycle. During the period of taking Eusemide, you should pay attention to not to miss the dose, there may be withdrawal bleeding or breakthrough bleeding if you miss the dose, add the dose promptly the next day after the dose, and then continue to take the dose, and insist on taking it for twenty-one days.