Generally not ah, this drug is a hormone tired of drugs, the main role is used for contraception and androgen secretion and other diseases of the treatment of ah, the main adverse effects of breast: tenderness, pain, enlargement, neurological manifestations such as headaches, migraines, changes in libido, mood depression / change gastrointestinal tract: nausea, vomiting, other gastrointestinal complaints skin: so generally does not lead to the necrosis of the femoral head. The femoral head necrosis it, there is also this drug is a kind of infrequent consumption of drugs, one or two times of use, will not cause more serious consequences ah.