Dydrogesterone tablets is a natural progestin, it has many functions, after ovulation to take dydrogesterone tablets the main role of the following two categories: 1, regulating menstruation, for irregular menstrual cycle, often ovulation bleeding, or a small amount of pre-menstrual dribbling, prolonged bleeding, as well as menstruation lasts more than 7 days of patients. Starting to take dydrogesterone tablets after ovulation can be used to adjust the ovarian endocrine function, and then adjust the menstrual cycle. Generally, the next menstrual period will come 2-5 days after stopping the medication, which will adjust the menstrual cycle to the normal range of 26-30 days.2. It is used for the treatment of abnormal endometrial hyperplasia, including endometrial simple hyperplasia disorder, as well as endometrial polyps, or young endometrial pre-cancerous lesions of the endometrium. Because progesterone is a progestin, it is mainly used to antagonize the effect of counteracting estrogen, so it can be used to treat diseases related to abnormal endometrial hyperplasia.