Understanding How Long Does It Take for Olive Oil to Work as a Laxative?

October 5, 2025 •

5 min read

Constipation is a common issue affecting millions, and for some, anecdotal evidence suggests that relief from olive oil can range from a few hours to a couple of days. The answer to how long does it take for olive oil to work as a laxative is not one-size-fits-all, as several factors influence its effectiveness and timing.

Quick Summary

The timeframe for olive oil's laxative effect varies depending on individual body chemistry and consumption method. It primarily works by lubricating the digestive tract and softening stools. Expect relief anywhere from several hours to a few days of consistent use.

Key Points

Variable Timeline: Relief from olive oil is not instant; it can take anywhere from a few hours to several days of consistent use to achieve results, depending on the individual.
Dual Mechanism: Olive oil works as a laxative by lubricating the digestive tract and stimulating bile production to soften stools and promote movement.
Method Matters: Taking olive oil on an empty stomach is a common approach, and mixing it with lemon juice or warm water may enhance its effect.
Not a Cure-All: Olive oil is a supportive remedy, and its effectiveness is boosted by a healthy lifestyle, including proper hydration, fiber intake, and regular exercise.
Use with Caution: Individuals with specific health conditions or those on certain medications, as well as children and pregnant women, should consult a doctor before using olive oil as a laxative.

The Laxative Mechanism: How Olive Oil Affects Digestion

Olive oil's reputation as a gentle, natural laxative comes from its unique properties and how the body processes its fats. The effect is typically not as immediate or forceful as a chemical stimulant laxative but rather works in a few key ways to promote smoother bowel movements.

Lubrication of the Digestive Tract

One of the most direct ways olive oil helps with constipation is by acting as a lubricant. The healthy fats in the oil coat the intestinal walls, creating a slick surface that helps hard stools slide through the colon more easily. This reduces the friction that can make passing stool painful or difficult. The higher the quality of the oil, such as extra virgin olive oil (EVOO), the better the results may be.

Stimulating Bile Production

Consuming olive oil can stimulate the production and release of bile by the gallbladder. Bile is a digestive fluid that helps break down and absorb dietary fats. Certain bile acids that are not reabsorbed can continue into the colon, where they act as natural laxatives by increasing water secretion and promoting colonic contractions. This helps to move stool along the digestive tract more effectively.

Softening the Stool

In addition to its lubricating effect, olive oil helps to soften the stool itself. It can form an emulsion with water within the feces, which increases the stool's moisture content. Softer stools are less painful and easier to pass, which is a significant factor for those struggling with constipation.

Factors Affecting the Laxative Timeline

The speed at which olive oil provides relief is not a fixed metric. Numerous variables can affect how quickly it works for a given individual.

Individual Physiology: Each person's metabolism, digestive system motility, and overall health are unique. Some people may experience a bowel movement within a few hours, while others might need several days of consistent use to notice a change.
Severity of Constipation: Mild, occasional constipation may resolve faster than a more severe or chronic case. In a 2015 study of patients with constipation, a daily consumption of olive oil proved as effective as mineral oil after four weeks.
Timing of Consumption: Many people report the best results by taking olive oil first thing in the morning on an empty stomach. This allows the oil to move through the digestive system without interference from other foods, which may lead to faster results.
Combination with Other Ingredients: Mixing olive oil with other remedies, such as warm water or lemon juice, might enhance its effect. Warm water improves hydration, while lemon juice contains vitamin C, which helps soften stool.

How to Best Use Olive Oil for Constipation

For those who wish to try olive oil as a natural remedy, here are a few common and effective methods:

The 'Shot' Method: Taking high-quality extra virgin olive oil on an empty stomach each morning is a common approach. Some find that adding a squeeze of fresh lemon juice can help with the taste.
With Warm Water: Mix olive oil into a glass of warm water and drink it. This helps with hydration and aids in softening stools.
With Juice: Blend olive oil into a glass of fruit juice, such as orange or prune juice. This can make the oil more palatable and add the benefits of the fruit's natural laxative properties.
Incorporated into Food: Drizzle olive oil over salads, cooked vegetables, or add it to a morning smoothie. While it may take longer to work this way, it can contribute to a healthier, more regular digestive system over time.

Comparison of Laxative Timelines

To understand where olive oil fits into the broader context of laxatives, it can be helpful to compare its timeline with other common options, both natural and over-the-counter.


Type of Laxative	How it Works	Typical Onset of Action	Notes
Olive Oil	Lubricates digestive tract, softens stool, stimulates bile production.	Several hours to a few days.	Gentle, natural remedy. Effect can be inconsistent.
Mineral Oil	A lubricant laxative that coats the bowel and stool.	6 to 8 hours.	Similar effectiveness to olive oil in studies but can interfere with vitamin absorption.
Stimulant Laxatives	Causes muscle contractions in the intestines to force a bowel movement.	6 to 12 hours.	Often fast-acting but can cause cramping and dependency with overuse.
Osmotic Laxatives	Draws water into the colon to soften stool (e.g., milk of magnesia).	30 minutes to 6 hours.	Can cause bloating, gas, and electrolyte imbalances.
Fiber Supplements	Adds bulk to the stool, making it easier to pass.	12 to 72 hours.	Gentle and promotes long-term regularity. Requires adequate hydration to work effectively.

Important Considerations and When to See a Doctor

While olive oil is a relatively safe and gentle option for most people, there are important considerations to keep in mind.

Amount: Consuming too much olive oil can lead to unwanted side effects like diarrhea, cramping, and an upset stomach.
Contraindications: Those with specific medical conditions should be cautious. For example, individuals on blood pressure-lowering medication should consult a doctor, as olive oil can also reduce blood pressure. It is not recommended for infants or children unless advised by a pediatrician.
Chronic Constipation: If constipation is a persistent or long-term problem, it's crucial to consult a healthcare provider. Chronic constipation can be a symptom of an underlying medical issue that requires professional evaluation.
Lifestyle: Olive oil is a supportive measure, not a standalone solution for poor lifestyle choices. A diet rich in fiber, sufficient hydration, and regular exercise are fundamental to preventing and managing constipation effectively.

Conclusion

In summary, the time it takes for olive oil to work as a laxative is highly individual, ranging from a few hours to several days of consistent use. It is a gentle, natural remedy that works primarily by lubricating the digestive tract and softening the stool. While it offers a mild approach to constipation relief, it should be used in moderation and as part of a healthy, balanced lifestyle that includes adequate fiber, hydration, and exercise. For persistent or severe constipation, a healthcare professional should be consulted to rule out any underlying medical conditions. As with any remedy, listening to your body's response is the best guide to finding effective relief.

For more information on digestive health, consult a reputable source like the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). [https://www.niddk.nih.gov/health-information/digestive-diseases/constipation]

Frequently Asked Questions

For best results, take extra virgin olive oil on an empty stomach, usually first thing in the morning. Some people mix it with a glass of warm water or lemon juice to improve the taste and effect.

Extra virgin olive oil is generally considered the best option for health purposes, as it is the purest and contains higher levels of beneficial compounds like antioxidants. However, any type of olive oil will likely provide a lubricating effect.

Olive oil should be used with caution in children and infants. It is crucial to consult a pediatrician before giving olive oil to a child for constipation to determine if it is safe.

Yes, potential side effects include diarrhea, abdominal cramping, and stomach upset, especially if a large amount is consumed at once. Olive oil is also high in calories, which should be considered if you are watching your weight.

If olive oil does not provide relief, or if your constipation is chronic or severe, you should consult a healthcare professional. Other lifestyle factors like hydration, exercise, and fiber intake should also be evaluated.

A study found olive oil to be as effective as mineral oil in relieving constipation over a four-week period. Olive oil is often preferred for its overall health benefits and lack of interference with the absorption of fat-soluble vitamins, a potential issue with mineral oil.

If you are considering using olive oil for constipation for an extended period, it's best to discuss this with a healthcare professional to ensure it is appropriate for your individual needs.