Can Castor Oil Induce Labor? Its Safety And Risks Involved

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“How much castor oil to take to induce labor?” is a common concern for many women who consider taking castor oil near the due date. Ancient Egyptians used castor oil to induce labor. However, the safety and effectiveness of castor oil use for labor induction lack definitive scientific evidence. In addition, some women may get uterine contractions after a small dose of its administration; while a few may not see any difference even after taking more amounts.

Is it safe to take castor oil to induce labor? How does it induce labor? What is the right amount? Read on to learn more about the use of castor oil in labor induction methods.

In This Article

Is Castor Oil Safe To Induce Labor?

Though there is no scientific proof of its benefits, doctors and midwives used castor oil in the past for inducing labor, in the case of post-term pregnancies, which is after 40 weeks (1). But it is rarely used now.

protip_icon Research finds
Castor oil, traditionally used by midwives to induce labor, could be considered a natural alternative to Oxytocin (a drug that can induce labor) (13) (14).

One study found that more than half of women at term who were administered castor oil went into active labor within 24 hours, while nearly half of the women who received the dose did not enter into labor (2).

Another study conducted ten years later and published in the Australian and New Zealand Journal of Obstetrics and Gynaecology found that castor oil did not show any notable side effects at the time of childbirth or during labor (3).

protip_icon Caution
If you’ve previously had a cesarean delivery, you shouldn’t try to consume castor oil while pregnant because it could lead to uterine rupture (15).

What Are The Risks Associated With Castor Oil?

Owing to its potential contraindications, most health practitioners usually do not recommend castor oil for inducing labor. Furthermore, it is known to cause the following risks to the mother and the baby:

  1. A small study published in the Cochrane database of systematic reviews found that all women who ingested castor oil experienced nausea (4) (5).
  2. It may cause hours of abnormal and painful contractions, which are not real labor pain. They can make you feel exhausted, making the labor difficult.
protip_icon Quick fact
Vomiting, dehydration, and diarrhea may also be adverse reactions to taking castor oil (16).

Image: Shutterstock

How Is Castor Oil Thought to Work?

Better known for its laxative properties, castor oil is also believed to work in jump-starting the labor. A research paper published in the ‘Proceedings of the National Academy of Sciences,’ says the key ingredient of castor oil, ricinoleic acidiXA major constituent of castor oil used in various industries, known to relieve pain and moisturize the skin , targets the prostaglandiniXGroup of substances that play an essential role in producing inflammatory responses and other bodily processes receptors of the intestines and uterus to stimulate contractions (6).

  • It is believed to cause cramps in the intestines, which stimulate the bowels and irritate the uterus to start contractions.
  • It might also limit fluid absorption and electrolytes, thereby dehydrating the body and causing contractions.

How Much Castor Oil Is Needed To Induce Labor?

Image: Shutterstock

In a study, where labor was successfully induced in more than half of full-term women, a single dosage of 60ml was given (2). However, this is may not necessarily be the standard dosage of castor oil for inducing labor.

An anonymous blogger shares her experience of attempting to induce labor by using castor oil. She explains, “So I started with a small spoonful (of castor oil) on Saturday. Most recipes that I saw involved 1-2 tablespoons. No baby, mind you, but no diarrhea. So with increased boldness, I took two tablespoons on Sunday, mixed in with my yogurt, and waited…No labor.

“This time I gulped it from a shot glass and chased it with pomegranate juice. Anyway, I went to bed shortly after. I leaped out of bed and ran to the bathroom with water gushing out of me in an uncontrolled stream…I was hit by another contraction and some more mild diarrhea. I spent the next half hour pacing back and forth in our bedroom and timing contractions. I was surprised at how quickly they were coming – every 2-4 minutes (i).”

How Long Does It Take For Castor Oil To Induce Labor?

The time taken for active labor varies from individual to individual. Some of them may get within 24 hours, while some may take more time. Limited studies report about women going into active labor within 24, 36, and 48 hours of castor oil intake (7).

Castor Oil Recipes To Induce Labor – Aren’t They Interesting?

It is not advisable to use castor oil to induce labor. However, if you like the oil’s flavor and aroma and want to have it in your diet, check with your obstetrician. Meanwhile, here are some recipes people have tried as home remedies to take castor oil as a laxative.

  • A smoothie can mask the pungent taste of castor oil. Put the required dosage in a mixture of juice, yogurt, and frozen fruit. The cold smoothie can easily flow down your throat.
  • Beat three eggs along with castor oil and make an omelet out of it. You can top it up with salsa to make it taste better. However, heating may lower the effect of castor oil.

Image: Shutterstock

  • Add two scoops of ice cream to the dose along with some orange juice. Have it before the ice cream melts.

Some Stories Of Using Castor Oil

While some say they went into labor sooner after castor oil consumption, there is no evidence to substantiate it. Some women also had unpleasant experiences using this method. Here we mention a couple of stories from MedHelp (8) and Emma’s Dairy communities (9).

  • Melody Oliva shares her experience saying, “I was 40+ weeks into pregnancy, already with a dilation of 5cm. But I had no contractions. I have then ingested 2 ounces of castor oil added to a milkshake and went for a walk. I started pooping and experienced severe cramping. After one and a half hour, I suffered the contractions, and I was admitted. I delivered my baby after 40 minutes. That was my third pregnancy. Even one of my friends did the same on the same day, and we both delivered sons on the same day.”
  • An anonymous woman says that she was dehydrated and had to get a drip. It can be dangerous to the health of the mother and the baby.

Frequently Asked Questions

1. Can castor oil hurt a fetus?

According to a 2018 retrospective descriptive study, castor oil can induce labor with little or no complications to the mother and baby. Around 91% of the women who consumed castor oil were able to deliver vaginally (10). But since the study sample size was quite small, more targeted studies are required to validate the safety and efficacy of castor oil in natural labor induction.

2. Does castor oil dilate the cervix?

Castor oil has laxative properties that promote intestinal motility and stimulate the bowels. Hypothetically, this property of castor oil is considered to induce labor and contractions in pregnant females (11). Similarly, castor oil is believed to dilate the cervix and speed up labor. However, scientific studies don’t support this hypothesis (12).

3. Are there any other natural methods for inducing labor?

You may try nipple stimulation as a natural method to induce labor. Nipple stimulation increases the oxytocin hormone in the body, which aids in the process of labor induction (17).

Castor oil is a laxative due to the presence of ricinoleic acid that stimulates the intestinal and uterine muscles to contract. However, there’s no clear answer to how much castor oil to take to induce labor. The time for onset of labor after taking castor oil may vary from one woman to another, and no standard dosage exists. In addition, the effectiveness of castor oil to induce labor is not well documented and may lead to nausea or painful cramps if taken in large amounts. Therefore, doctors may not recommend consuming castor oil to start uterine contractions. However, check with your healthcare provider if you wish to incorporate castor oil into your diet.

Infographic: Possible Drawbacks Of Natural Ways Of Inducing Labor

Inducing labor is usually suggested when you have crossed your due date, or your water has broken, but contractions are yet to start. Natural ways of inducing labor lack adequate scientific evidence and may even be harmful if precautions are not followed. The infographic below highlights the possible drawbacks of the natural methods to induce labor.

can natural methods of inducing labor be harmful (infographic)

Illustration: Momjunction Design Team

Get high-quality PDF version by clicking below.

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Download Infographic in PDF version

Key Takeaways

  • There is a lack of definitive scientific evidence on the safety and efficacy of castor oil as a natural labor inducer, despite its historical usage.
  • Women who previously had a c-section should refrain from consuming castor oil.
  • Consumption of castor oil may result in adverse effects such as nausea, dehydration, diarrhea, and painful contractions that could make labor difficult.
  • Reports indicate that the duration taken for labor induction after castor oil consumption varies with women.
  • Castor oil functions as a laxative by targeting prostaglandin receptors in the intestines and uterus to induce contractions.

Discover the safety of using castor oil to induce labor in this concise video. Is it a safe option? Find out!

Personal Experience: Source

i. The 2nd labour story part i: in which castor oil is put to the test;


MomJunction's articles are written after analyzing the research works of expert authors and institutions. Our references consist of resources established by authorities in their respective fields. You can learn more about the authenticity of the information we present in our editorial policy.
1. Pregnancy and birth: When your baby’s due date has passed; Institute for Quality and Efficiency in Health Care (IQWiG) (2018)
2. Garry D et al.; Use of castor oil in pregnancies at term; Altern Ther Health Med (2000)
3. Boel ME et al.; Castor oil for induction of labour: not harmful, not helpful; Aust N Z J Obstet Gynaecol. (2009)
4. Kelly AJ et al.; Castor oil, bath and/or enema for cervical priming and induction of labour; Cochrane Database Syst Rev. (2013)
5. Sahar Abd El-Gawad; Castor Oil Safety and Effectiveness on Labour Induction and Neonatal Outcome; Research gate (2014)
6. Sorin Tunaru et al.; Castor oil induces laxation and uterus contraction via ricinoleic acid activating prostaglandin EP3 receptors; Proc Natl Acad Sci U S A. (2012)
7. RonitGilad et al.; Castor oil for induction of labor in post-date pregnancies: A randomized controlled trial; Elsevier Women and Birth Volume 31, Issue 1 (2018)
8. Successful stories of using castor oil??
9. Any positive stories on castor oil induction? Emma’s
10. Andrea L DeMaria et al.; Castor oil as a natural alternative to labor induction: A retrospective descriptive study NCBI (2018)
11. Which method is best for the induction of labour? A systematic review, network meta-analysis and cost-effectiveness analysis NCBI
12. Josie L Tenore; Methods for cervical ripening and induction of labor NCBI (2003)
13. J M Shyken, R H Petrie; Oxytocin to induce labor NCBI
14. Castor oil as a natural alternative to labor induction: A retrospective descriptive study Science Direct
15. G. B. Sicuranza & R. Figueroa Uterine rupture associated with castor oil ingestion
16. Jeffrey Alookaran; Jayson Tripp; Castor Oil NIH
17. What natural ways to induce labor actually work, Cleveland Clinic
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