Progesterone is the most dominant sex hormone in the female body, and the most important effect of taking exogenous progesterone is to improve the symptoms of endogenous progesterone deficiency. So what can exogenous progesterone supplementation do? For women with irregular menstrual cycles and drippy periods, exogenous progesterone supplementation can help regulate menstruation, delaying the onset of menstruation and shortening the drippy periods. For women with symptoms of miscarriage in early pregnancy due to insufficient progesterone levels, progesterone supplementation can reduce the excitability of the pregnant uterus, inhibit uterine activity, and play a role in preserving the fetus. With the combined effect of progesterone and estrogen, it can promote adequate breast development and prepare for breast production. Along with these therapeutic effects, exogenous progesterone also causes a mild increase in the patient’s body temperature and has a diuretic effect.