After taking Medroxyprogesterone Tablets, heavy menstrual bleeding may occur, you can closely observe the menstrual flow after taking the medicine. Medroxyprogesterone tablets are a strong-acting progestational hormone drug with the effect of regulating menstruation. After the first dose, medicated withdrawal bleeding will occur under the action of the hormone. Some women have irregular menstruation due to a thick uterine lining. After taking medroxyprogesterone tablets, the level of progesterone in the body increases, which promotes the shedding of the uterine lining, resulting in an increase in the amount of menstrual flow, which is normal, and thereafter the amount of menstrual flow will gradually decrease and return to normal. In addition, some patients suffering from severe dysfunctional uterine bleeding, taking medroxyprogesterone tablets can play a limited role, will also appear in the phenomenon of heavy menstrual flow. If the menstrual bleeding remains heavy after taking medroxyprogesterone tablets, you should consult a doctor for ultrasound and sex hormone examination to clarify the cause of bleeding and then carry out treatment.