?? Syntocinon (pitocin) is very effective at causing contractions, more so at later gestational ages. It is used for many indications, and its effectiveness varies for those indications (ie induction of labor, cessation of postpartum hemmorhage). Induction success varies greatly based on patient and pregnancy characteristics.
Oxytocin. Oxytocin is a very effective medication given to make uterine contractions for labor.