 Postpartum hemorrhage PPH remains a major cause of maternal deaths worldwide. Misoprostol offers several advantages over oxytocin and ergometrine, the drugs currently used to treat PPH. For example, misoprostol is stable at high temperatures and has a shelf life of several years, it is easy to administer, it can be given to hypertensive patients, and it is inexpensive. This randomized, double-blind placebo-controlled trial will test whether misoprostol is as effective as oxytocin in treating primary PPH in hospital births, both when women have received prophylactic uterotonics in the third stage of labor and when they have not. 