For functional amenorrhea is usually taken up to 5~10 days, for malignant tumor diseases such as breast cancer or endometrial cancer need to be taken as prescribed by the doctor. Methylhydroxyprogesterone acetate tablets have the same structure as natural progesterone and can treat functional amenorrhea, usually taken orally for 5 days, for those who still do not have menstruation after 5 days, it is necessary to continue to take it for a maximum of 10 days. In addition, medroxyprogesterone acetate has an inhibitory effect on DNA synthesis of receptor-positive cells, which can help treat hormone-dependent tumors such as breast cancer, endometrial cancer, prostate cancer, etc. The specific dosage and dosage time of this condition is determined by the degree of the patient’s personal condition, as well as the recovery situation, and it is not certain how long to take. Methylhydroxyprogesterone tablets may have adverse reactions, such as irregular bleeding, may also cause liver function abnormalities, for liver and kidney insufficiency, unspecified breast cancer, cerebral infarction, myocardial infarction or unexplained uterine bleeding of the patient is prohibited to use. If you need to take medroxyprogesterone tablets should be strictly do the doctor’s orders, you can not just take the drug, can not privately stop taking the drug or extend the time of taking the drug.