It can be used to treat irregular menstruation, irregular vaginal bleeding, polycystic ovary syndrome, and for contraception, where the contraceptive effect can reach more than 99% and protect the uterus and ovaries. If women do not have fertility requirements, they can take this drug for contraception, the side effects of this drug is very small negligible, then you can rest assured that the application, for fertility requirements after stopping the drug can be prepared for pregnancy, there are no side effects.