Progesterone can be used for fertility preservation after pregnancy, and the regular dose is 200-300mg/day, as prescribed by your doctor. Progesterone can exogenously supplement the ovarian luteal function and is mainly used for fertility preservation therapy during pregnancy. Women who are pregnant with symptoms of pre-eclampsia, such as vaginal bleeding, lumbago, abdominal pain, etc., are caused by insufficient levels of progesterone in the body, and can be treated with progesterone to preserve the fetus. The regular dose of progesterone is 200-300mg/day, if the pregnant woman’s progesterone is too low or the symptoms of recurrent miscarriage or preeclampsia are more serious, you can increase the dosage of progesterone, not more than 400mg/day, if the pregnant woman’s above mentioned symptoms are still mild, you can also reduce the dosage of progesterone. Progesterone specific dosage usage should be under the guidance of a doctor, do not increase or decrease on their own.