It is also possible to take Yosmin continuously for a year, as long as there is no amenorrhea and no other symptoms, you can continue to take it orally, but it is recommended that every six months of Yosmin should be done a liver and kidney function test, mainly to understand whether it will lead to abnormal liver function or kidney abnormality, as long as you pay attention to this can be done. Yosmin is a short-acting contraceptive, mainly to inhibit ovarian ovulation, make the uterine lining thin, prevent the fertilized egg to achieve the purpose of contraception. You should pay attention to the following points during the period of taking Yosmin: First, take it at a fixed time every day, the relative effect will be better. Secondly, you can’t miss a dose of Yosmin, once you miss a dose of Yosmin, irregular bleeding may occur or lead to contraceptive failure.