GUIDE
About 1 in 4 labors in the US is induced — understanding the methods helps you feel prepared if it becomes part of your birth story.
From membrane sweeps to Pitocin, each induction method works differently. Here is what the evidence says about when, why, and how.
Be prepared from day one
In an ideal world, every baby would arrive on their own schedule. But sometimes the safest path is to start labor rather than wait for it. Induction is recommended when the risks of continuing the pregnancy are greater than the risks of delivery — as opposed to waiting for the natural signs of labor to begin on their own.
The most common reason is being overdue. By 41 weeks, the placenta begins to function less efficiently, and the risk of complications rises. Other medical reasons include preeclampsia, gestational diabetes, low amniotic fluid, or your water breaking without contractions starting.
Elective induction — choosing to be induced at 39+ weeks without a specific medical indication — has become more common since the ARRIVE trial (2018), which showed that induction at 39 weeks for low-risk first-time mothers did not increase C-section rates and may actually reduce them slightly. Discuss with your provider whether this option makes sense for you.
Your provider will explain the specific reasons for your induction and the risks of both proceeding and waiting.
There is no single way to induce labor. Your provider will choose a method — or a combination of methods — based on the condition of your cervix, how far along you are, and why induction is being recommended.
The most important factor is your Bishop score, a measurement of how "favorable" your cervix is. It assesses dilation, effacement, station (how low the baby is), consistency, and position. A high Bishop score (6 or above) means your cervix is already preparing for labor and induction is more likely to be quick and successful. A low Bishop score means cervical ripening will be needed first.
Your provider inserts a finger through your cervix and sweeps it around to separate the amniotic membrane from the cervical wall. This releases prostaglandins that can trigger labor. Done in the office, no hospital stay required. Success rate is moderate — it works best if your cervix is already softening.
A prostaglandin medication placed near your cervix or taken orally to soften and thin the cervix. Given every 3-6 hours as needed. Can cause strong contractions — you will be monitored closely. Often used as the first step before Pitocin.
A prostaglandin insert placed near the cervix to ripen it over 12 hours. Can be removed if contractions become too strong. Often used overnight before starting Pitocin in the morning.
A small balloon inserted through the cervix and inflated with saline. It applies gentle mechanical pressure to help the cervix dilate to 3-4 centimeters. Falls out on its own once dilation is achieved. No medication involved — purely mechanical.
Given through an IV to stimulate contractions. The dose starts low and is gradually increased until you are having regular, strong contractions. This is the most common induction method and is also used to augment labor that has stalled.
Your provider uses a small hook to rupture the amniotic membrane. This is painless (the membrane has no nerves) and can jump-start or intensify labor. Usually done when you are already partially dilated and often combined with Pitocin.
For a scheduled induction, you will typically arrive at the hospital in the evening (for overnight cervical ripening) or early in the morning. A nurse will start your IV, place a fetal monitor, and your provider will check your cervix.
If your cervix needs ripening, you may receive Cervidil, misoprostol, or a Foley bulb first. This phase can take 12-24 hours and is usually the least eventful — bring a book, a show to stream, and snacks (if allowed). Some women begin contracting from cervical ripening alone.
Once your cervix is favorable, Pitocin is typically started. The dose begins very low and is increased every 15-30 minutes until you are having consistent, strong contractions. This can take several hours. Induced contractions can be intense, and many women request an epidural during Pitocin induction — there is no reason to suffer unnecessarily.
From there, labor follows the same stages as spontaneous labor: dilation, pushing, and delivery of the placenta.
Knowing the plan reduces anxiety. Ask your provider to walk you through the specific steps they expect for your induction.
Induction is not always fast. First-time moms especially may have inductions that take 24-48 hours from start to delivery. This is normal, not a sign that something is wrong. Keep in mind that the goal is a safe delivery, not a quick one. Your hospital bag should include extra entertainment and snacks for the partner too.
Sometimes, despite hours of medication and effort, labor does not progress. This is called a "failed induction" and may lead to a C-section. This is more common when induction begins with an unfavorable cervix.
A failed induction is not a failure on your part. It means your body and baby were not ready for labor, and the safest route to delivery is surgical. Your care team will explain the situation and next steps clearly.
If you have had a previous C-section and are considering induction for a subsequent pregnancy, be aware that some induction methods (particularly prostaglandins) may not be recommended due to a slightly increased risk of uterine rupture. Discuss your specific situation with your provider and review our VBAC guide for more context.
This guide is for informational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider with any questions about your pregnancy.
