Methoxyprogesterone acetate tablets can not be taken orally during menstruation, because it belongs to the progesterone, generally taken orally is in the middle of menstruation or the use of estrogen late, to regulate the menstrual cycle of the purpose, but also able to treat functional uterine bleeding, but also to play a role in preserving the fetus. Because menstruation is coming, due to the withdrawal of progesterone to cause menstruation, if you start taking oral progesterone at this time, it may cause persistent growth of the endothelium, but also affects the hormone levels in the body, and may cause disruption of the menstrual cycle, so it can not be taken orally during menstruation. Oral progesterone must be taken according to their own take, the use of what purpose, according to their own situation to determine the oral progesterone dose and time, it is recommended to follow the doctor’s instructions for oral, at the same time, if there is a thrombus, it is not recommended to oral progesterone, because it will accelerate the formation of blood clots.