Ursimine should be taken for 21 consecutive days and the next course of treatment should be taken only after 7 days of discontinuation. It is normal that withdrawal bleeding may occur in women during the discontinuation period, so there is no need to worry. Women with a history of thromboembolism, pulmonary embolism, or myocardial infarction should not take this drug. Eusemide, also known as drospirenone ethinyl estradiol tablets, is mainly used for female contraception, but also for regulating menstruation. If this drug is taken correctly, the probability of contraceptive failure is about 1%, but if there is a missed dose or incorrect dosing method, the contraceptive failure rate will increase.