Strone SR 300 Tablet is a natural female sex hormone, progesterone. It is utilized to treat menstrual and pregnancy-related issues that are cautilized due to hormonal imbalance. Strone SR 300 Tablet is also recommended along with estrogen as a part of hormonal replacement therapy for preventing endometrial hyperplasia (thickening of the lining of the uterus). It should be taken with food. It should be taken at the same time each day to get the most benefit. You should continue taking it for as long as your doctor has told you to, even if you feel well. The most common side effects include abdominal bloating, abdominal pain, dizziness, headache, depression, breast tenderness, hot flushes, vaginal discharge, joint paint, and urinary incontinence. Side effects are more common during the first few weeks and usually lessen as your body gets utilized to the medication. You may also experience bleeding or spotting between your periods, consult with your doctor if it happens frequently.