Your due date has passed and the hospital wants to induce labor. Or perhaps you've been told there's a medical reason to start labor earlier. Whatever the reason, induction is something many pregnant people experience — around 25 percent of all births are induced.
Here is a complete guide to how induction works, which methods are used, and what to expect.
What is labor induction?
Labor induction means starting labor artificially instead of waiting for it to begin on its own. A midwife or doctor uses various methods to ripen the cervix and stimulate contractions.
The goal is to get the body started on a birth process that would otherwise have started naturally — just at a time that is safer for the mother or baby.
Induction is not the same as an emergency cesarean section. It is a planned process where the goal is vaginal birth, even though labor is started artificially.
When is induction performed?
Post-term (week 41+2 to 42)
The most common reason for induction is going post-term. According to WHO guidelines, all pregnant people should be offered induction from week 41+2. The reason is that the risk of complications increases gradually after the due date, particularly after week 42.
You will typically be called in for a checkup around week 41, where a midwife or doctor assesses whether it is time to start.
Medical reasons
Induction may also be appropriate earlier in pregnancy if complications arise:
- Preeclampsia — high blood pressure and protein in the urine
- Gestational diabetes — where blood sugar control is insufficient
- Low amniotic fluid (oligohydramnios) — can affect the baby's wellbeing
- Fetal growth issues — the baby is growing too little or too much
- Twin pregnancy — increased risk after week 37–38
Premature rupture of membranes without contractions
If your waters break but contractions do not start on their own within 24 hours, most hospitals will recommend induction. The reason is an increased risk of infection after rupture of membranes.
Contact the hospital immediately if your waters break. Note the time, color, and smell. Green or brownish amniotic fluid may indicate the baby has had a bowel movement and requires prompt assessment.
Methods of induction
There are several methods, and which one is used depends on how ripe your cervix is. The doctor assesses this with an examination called the Bishop score.
Membrane sweep
A membrane sweep is often the first step and is done at a routine checkup. A midwife or doctor inserts a finger into the cervix and gently separates the membranes from the uterine wall. This releases prostaglandins that can start contractions.
It can feel uncomfortable, and you may have some spotting afterward. A membrane sweep is not a guarantee that labor will start, but it increases the chance.
Cervical ripening with a balloon (Foley catheter or Cook balloon)
If the cervix is unripe (closed and firm), a small balloon can be inserted through the cervix. The balloon is filled with water and applies mechanical pressure to the cervix, causing it to soften and open.
The balloon remains in place for 12–24 hours and falls out on its own when the cervix has opened sufficiently. This method is gentle and has fewer side effects than medications.
Prostaglandin (gel or tablet)
Prostaglandin is a hormone that softens the cervix and can initiate contractions. It can be given as a gel placed in the vagina, or as a tablet (misoprostol) taken orally or placed in the vagina.
The treatment is typically repeated at intervals of a few hours until contractions are established. Between doses, the baby is monitored with CTG (fetal heart rate monitoring).
Oxytocin drip (artificial contractions)
When the cervix is ripe enough, oxytocin can be given intravenously to start or strengthen contractions. The dose is increased gradually until contractions have good strength and frequency.
With an oxytocin drip, you will need continuous CTG monitoring throughout labor. You will have an IV line in your arm and be connected to monitoring equipment, but you can still move around in bed and often stand beside it as well.
Amniotomy (breaking the waters)
Amniotomy means a midwife or doctor makes a small hole in the membranes with a special tool. When the waters break, pressure on the cervix increases and the body releases prostaglandins. Amniotomy is often done in combination with an oxytocin drip.
Ask your midwife or doctor which method is appropriate for you and why. You have the right to have explained what is going to happen and what the alternatives are.
What can you expect?
Induction is a process that takes time. Many people are surprised by how long it can take from the first intervention to the birth.
Timeframe
- Membrane sweep: Can take 24–48 hours before contractions start (or may not work at all)
- Balloon ripening: 12–24 hours for cervical ripening
- Prostaglandin: Multiple doses over 1–2 days is common
- Oxytocin drip: Contractions usually start within a few hours
Overall, induction can take anywhere from one to three days, especially with a first birth. It is normal to start with one method and move on to the next if the first does not produce enough effect.
Pain experience
Many people find that contractions induced with oxytocin can feel more intense than spontaneous contractions. The reason is that the body has not had the gradual build-up that occurs with a natural labor start. All forms of pain relief are available — including epidural, nitrous oxide, and natural methods.
Monitoring
During induction, you and the baby are monitored more closely than in a spontaneous birth. Expect regular CTG, blood pressure measurements, and vaginal examinations to check progress.
Benefits and drawbacks of induction
Benefits
- Reduces the risk of complications from going post-term
- Makes it possible to give birth vaginally even when there is a medical reason to end the pregnancy
- A planned time provides predictability
Drawbacks
- The process can take a long time and feel exhausting
- Increased chance of needing an epidural due to intense contractions
- Slightly increased risk of operative delivery (vacuum/forceps)
- Limited freedom of movement due to monitoring
Research shows that induction at post-term does not increase the risk of cesarean section compared with waiting. In fact, induction at week 41+ may slightly reduce cesarean risk, according to large studies such as the ARRIVE trial.
Can you decline induction?
Yes. You always have the right to decline induction, including when post-term. Informed consent is a fundamental right in healthcare.
If you choose to wait, the hospital will offer closer monitoring with CTG and ultrasound to monitor the baby's wellbeing. Your midwife or doctor should explain the risks of waiting and the risks of induction, so that you can make an informed choice.
It may be helpful to write down your wishes in a birth plan in advance, so that the staff knows what you are thinking.
Although you have the right to decline, you should listen carefully to the medical assessment. In serious complications such as preeclampsia, delaying induction can be risky.
How to prepare
Practical preparations
- Pack your hospital bag well in advance — induction may mean several days in hospital
- Bring entertainment — books, music, podcasts, chargers for phone and tablet
- Food and drinks — check with the hospital what you can bring
- Comfortable clothes — something you can move around in and that is easy to put on and take off
- Birth plan — write a birth plan with your wishes for pain relief, birth position, and any concerns
Mental preparation
Induction can feel different from the birth you had imagined. It is completely normal to feel disappointment, uncertainty, or nervousness.
Talk to your midwife about your expectations. The more you know about what is going to happen, the more confident you will feel. Remember that many thousands of people go through induction every year with positive experiences.
When contractions are established
Regardless of whether labor started spontaneously or was induced, the process is the same once contractions are properly established. Our contraction timer helps you keep track of frequency and duration, so you and your midwife can follow the progress.
Use the Contraction Timer when contractions start — it helps you keep track of how often contractions come and how long they last. Also check the 5-1-1 rule to know when you should contact the hospital.
Frequently asked questions about induction
Does induction hurt more than spontaneous labor?
Many people find that oxytocin contractions can feel more intense because they come more quickly than with a natural start. You have access to all pain relief, including epidural.
How long can I go past my due date?
Standard practice is to offer induction from week 41+2. Most hospitals recommend induction by week 42 at the latest, but this is assessed individually. You are monitored with checkups during the period after your due date.
Can I move around freely during induction?
During balloon ripening and prostaglandin treatment you can often move freely between doses. When the oxytocin drip is started, you are connected to monitoring, but you can still change position and stand by the bed.
Does induction increase the risk of cesarean section?
No, research shows that induction at post-term does not increase the risk of cesarean section. Studies suggest the rate may be somewhat lower compared to waiting for spontaneous labor after week 41. If it becomes clear that vaginal birth is not possible, a cesarean section may be considered.
What happens if induction does not work?
If the cervix does not respond to treatment after repeated attempts, the doctor will assess further steps. This may mean trying a different method, taking a break and trying again, or in some cases planning a cesarean section.
Sources: WHO — Labor induction guidelines, American College of Obstetricians and Gynecologists (ACOG), ARRIVE Trial (New England Journal of Medicine). Last updated March 2026.