Progesterone is the natural progesterone, so progesterone is the hormone drug. Generally women who experience delayed menstrual cycles can take progesterone to induce menstruation in the absence of pregnancy. This is because replenishing the progesterone in the body will cause withdrawal bleeding about 3-7 days after stopping the medication, which will lead to the onset of menstruation. For early pregnancy, due to luteal insufficiency caused by the manifestation of preeclampsia, women also need to take oral progesterone capsules, or direct intramuscular injection of progesterone injection to replenish the body’s progesterone, so as to play a therapeutic role in the preservation of the fetus. Generally after taking progesterone, some women may have dizziness, nausea and other gastrointestinal reactions, if necessary, you can take intramuscular progesterone injection to supplement.