The effectiveness of how long to take Deferiprone tablets is determined by the effectiveness of the duration of application of Deferiprone for its therapeutic purpose. If it is for abnormal uterine bleeding, and the bleeding is caused by abnormal ovarian function, at this time in the application of depo progesterone need at least 10 days, applied in the second half of the menstrual cycle. If the purpose of regional progesterone is to enhance ovarian function and for the purpose of fertility preservation, the application of dydrogesterone can be considered to be started after ovulation, and can be continued after a successful pregnancy has been detected, and the amount should be appropriately increased until after twelve weeks of intrauterine gestation, the application of dydrogesterone can be considered to be discontinued. The effectiveness of the timing of the application of dexamethasone needs to be timed differently depending on the condition being targeted by the different diseases.