Progetron 200 SR is a sustained‑release tablet containing natural micronized progesterone 200 mg, most often used in hormone replacement therapy alongside estrogen, for treating amenorrhea, preventing endometrial hyperplasia, supporting early pregnancy, and assisting in infertility management .
It works by mimicking natural progesterone—restoring hormonal balance, preparing the uterine lining for implantation, and preventing excessive uterine lining growth when estrogen is used alone.
Common side effects include drowsiness or fatigue (especially if taken during the day), headache, breast tenderness, mood swings, bloating, dizziness, vaginal spotting or discharge; it should be taken with food, typically once daily in the evening, under medical supervision