Dydrogesterone 20 mg tablets are primarily indicated for treating various conditions caused by progesterone deficiencies and for hormone replacement therapy (HRT). Treatment of female infertility, often related to luteal phase defects, by preparing the uterine lining for pregnancy. . Prevention of miscarriage (threatened or recurrent), particularly in women with a history of such complications and a proven progesterone deficiency. Management of menstrual disorders, such as: . Painful menstruation (dysmenorrhea). . Irregular or absent menstrual periods (amenorrhea). . Abnormal or heavy uterine bleeding. . Premenstrual syndrome (PMS) symptoms like bloating, mood swings, and breast tenderness.