Eusebio is a short-acting female contraceptive containing the progestin norethindrone, Eusebio is best taken at the same time every day, because Eusebio contains estrogen and progestin, eaten will enter the body’s blood circulation, if eaten daily at a fixed time, can ensure that the concentration of the drug in the body is distributed evenly, the contraceptive effect will also be better. If you do not take it at a fixed time, it is likely to be missed and the unbalanced distribution of the concentration of the drug will probably lead to contraceptive failure. If you miss a dose, you should take it within 12 hours. Take the medication as prescribed by your doctor and take enough doses for the cycle, do not stop taking the medication. You can start to take Ursine on the 5th day of menstruation, regardless of whether the menstruation is clean or not, the patient will have a little irregular bleeding in the first 1 or 2 months after taking the pill, and it will be gradually regular after insisting on taking it.