Taking progesterone capsules without menstruation for half a year may or may not be effective. If partially due to mental tension, environmental changes and other stress factors caused by amenorrhea eating progesterone capsules may be effective, such as due to uterine adhesions or ovarian failure caused by the ineffective. Progesterone capsules are progestins that can treat amenorrhea caused by a normal reproductive tract, a certain level of estrogen in the body, but a lack of progesterone antagonism. 1. If amenorrhea is partly caused by stress factors such as mental tension and environmental changes: the endometrial thickness reaches more than 7mm, oral progesterone capsules for 10 days, most of them can have menstruation after stopping the medicine. 2. If the uterine cavity adhesion: cervical adhesion caused by amenorrhea belongs to uterine amenorrhea, amenorrhea half a year to take progesterone capsules, most will not menstruation. 3. If it is ovarian failure: body estrogen level decline, estrogen level lack, pituitary tumor caused by hyperprolactinemia caused by amenorrhea and hypothyroidism caused by amenorrhea and so on, often oral progesterone capsules will not menstruation, ineffective. Menstruation for half a year does not come, please consult a doctor in time, under the guidance of the doctor to identify the cause of the disease, give reasonable treatment. In addition, progesterone should be used under the guidance of a doctor, do not take drugs indiscriminately, so as not to cause adverse reactions.