Effectiveness of cervadil vs pitocin (oxytocin) induction?

Depends on cervix. Before induction your current cervical exam is used as a determinant for which mode of induction. Cervidil is most likely used when the cervix is less soft, dilated, and effaced (thinned out), and more posterior, as it increases prostaglandins release to stimulate dilation, thinning and softening. Those who are already dilated and effaced benefit more from pitocin (oxytocin).