Introduction To Regestrone 5mg Tablet Regestrone 5mg Tablet contains norethindrone (alternatively called norethisterone), a synthetic version of the female hormone progesterone. It is usually prescribed for conditions like amenorrhea, uterine bleeding, premenstrual syndrome, irregular or heavy periods and endometriosis. It is also given as an oral birth control pill. Norethindrone, which belongs to a class of drugs called "progestins", works by mimicking the effects of the progesterone in ... Regestrone Tablet is used to treat various menstrual problems, including painful, heavy, or irregular periods, premenstrual syndrome (PMS), and endometriosis. It helps balance progesterone hormone levels, restore normal menstrual cycles, and reduce associated discomfort. Regestrone CR Tablet contains norethisterone (10 mg), which acts on your body as follows: Regulates endometrium growth: Norethisterone regulates the growth and shedding of the endometrium, which is the lining of your uterus. Suppresses ovulation: One of its actions is to suppress ovulation, which means it prevents the release of an egg from your ovaries during your menstrual cycle. Alters cervical mucus: This medicine also changes the consistency of cervical mucus, making it thicker and thus ...