Eusebio is a kind of short-acting contraceptive pill, and it is one of the more commonly used contraceptives at present because of its relatively small side effects. Generally, you need to start taking Eusemide on the 1st-5th day of your period, and take it for 21 days for a cycle. You will usually stop taking the pill for 2-7 days to get your period, and the amount of your period may be slightly less than normal after taking the pill. If you need to continue taking oral contraceptives next time, you can start the next course of treatment after 7 days of stopping Ursine, and each course of treatment will require 21 days of oral intake. The total duration of the pill depends on the individual case. If it is for contraception, it can be taken for a long time if contraindications are excluded. If the purpose is to adjust the menstrual cycle, it is usually necessary to take it orally for 3-6 months to observe the efficacy.