Progestone 200mg Capsule is a natural female sex hormone, progesterone. It is used to treat menstrual and pregnancy-related issues that are caused due to hormonal imbalance. It helps to establish and maintain pregnancy. It also prevents the increase in thickness of the endometrium (lining of the uterus) caused by estrogen. You should continue taking it for as long as your doctor has told you to, even if you feel well. Take as directed by doctor..