Taking medroxyprogesterone acetate tablets for menstruation may cause abnormal menstruation or even stop menstruation. 1. Abnormal menstruation: Methoxyprogesterone acetate tablets is a kind of medicine used to regulate menstrual irregularities, functional uterine bleeding and endometrial cancer, etc. It can inhibit endometrial hyperplasia, and help to repair the uterine lining, which can lead to a decrease in menstrual flow. 2. Cessation of menstruation: if taken for a long period of time, medroxyprogesterone acetate tablets can cause the endometrium to be unable to shed and lead to cessation of menstruation. Cerebral infarction, myocardial infarction, thrombophlebitis and other patients with a history of thrombosis, undiagnosed bleeding from the sexual organs, urinary bleeding is contraindicated in patients with a history of allergy to this product. Therefore, the specific use of the drug needs to be carried out under the guidance of a doctor and should not be taken without authorization.