Progesterone Tablets 100mg is most commonly prescribed during hormone replacement therapy and for causing menstrual periods in women who have not yet reached menopause. It has been formulated using progesterone as an active chemical compound having molecular formula C21H30O2 and a molar mass of 314.469 g/mol. This tablet gets rapidly metabolized in the liver with a very low terminal half-life of about 5 minutes. Progesterone Tablets 100mg is also used for the prevention of overgrowth of uterus lining.