In Treatment of Abnormal uterine bleeding DEPO PROVERA 150 MG INJECTION is a synthetic progestin that replicates the effect of a natural female hormone called progesterone. It slows the growth of the lining of the womb before menstruation, which reduces the bleeding during menstruation. If heavy periods become such a problem that they interfere with your everyday life, then try taking things a little easier on those days. In Treatment of Endometriosis DEPO PROVERA 150 MG INJECTION contains progesterone, a female hormone that is important in the regulation of ovulation and menstruation. It is used to cause menstrual periods in women who have not reached menopause but are not having periods due to a lack of natural progesterone in the body.