How long after a suppository can I poop?

October 11, 2025 •

4 min read

Rectal suppositories for constipation often work much faster than oral laxatives, with some varieties producing results in as little as 15 minutes. Understanding how long after a suppository can I poop depends heavily on the specific medication used and your body's individual response. For most common stimulant or osmotic suppositories, the waiting period is relatively short, making it a convenient option for quick relief.

Quick Summary

The timeframe for a bowel movement after using a suppository varies based on the active ingredient. Laxative types, like glycerin or bisacodyl, typically work within 15 to 60 minutes. Factors such as proper insertion and pre-existing conditions can influence the onset and effectiveness of the medication. Wait for the suppository to dissolve and stimulate the bowel before attempting to pass stool.

Key Points

Timing varies by type: Different suppositories for constipation, such as glycerin or bisacodyl, have different onset times, typically ranging from 15 to 60 minutes.
Glycerin acts within an hour: A glycerin suppository usually works by drawing water into the intestines to induce a bowel movement within 15 to 60 minutes.
Bisacodyl stimulates quickly: A bisacodyl suppository acts as a stimulant laxative, often producing a bowel movement within 15 to 60 minutes after insertion.
Proper insertion is key: For optimal results, insert the suppository about one inch into the rectum and remain still for at least 15-20 minutes to ensure it dissolves and is retained.
Stool can block absorption: Large amounts of stool can interfere with medication absorption. In some cases, a bowel movement beforehand is recommended.
Do not over-rely on suppositories: Frequent or prolonged use, especially of stimulant suppositories, can lead to dependence and should be discussed with a healthcare provider.

A rectal suppository is a solid, cone-shaped medication designed to be inserted into the rectum, where it melts or dissolves at body temperature to release its active ingredients. For constipation relief, these medications can work much faster than their oral counterparts. The quick onset is due to the medication being absorbed directly into the bloodstream or acting locally on the rectal mucosa, bypassing the digestive system. While fast-acting, the precise timing of a bowel movement depends on the type of suppository used and its specific mechanism of action.

How Suppositories Expedite Bowel Movements

Rectal suppositories offer a direct route for medication delivery, with different formulations designed to address constipation in specific ways. Understanding how they work can help set proper expectations for timing.

Types of Suppository for Constipation

Glycerin Suppositories: As a hyperosmotic laxative, glycerin draws water into the intestines. This water softens the stool and stimulates the rectal muscles, triggering a bowel movement. These are generally considered gentle and are often used for occasional constipation in both children and adults.
Bisacodyl Suppositories: This type is a stimulant laxative. Bisacodyl works by directly stimulating the muscles of the intestines and rectum, causing them to contract and propel stool forward. The stimulating action makes it a very effective and relatively quick-acting option.
Carbon Dioxide-Releasing Suppositories: These suppositories melt and release carbon dioxide gas, which gently expands the rectal walls. This expansion creates a stimulating effect that encourages a bowel movement.

The Expected Timing: From Insertion to Result

The most critical factor determining how long you'll wait for a bowel movement is the suppository's active ingredient. The following is a general guide, but individual results may vary based on factors like stool consistency and proper insertion.

Common Suppository Timing

Glycerin Suppository: Typically works within 15 to 60 minutes. It is recommended to remain lying down for 15-20 minutes after insertion to ensure the suppository melts and is retained.
Bisacodyl Suppository: Often produces a bowel movement within 15 to 60 minutes. As a stimulant, its effect can be more forceful than a glycerin suppository.
Carbon Dioxide-Releasing Suppository: Acts quickly, with results typically seen within 15 to 30 minutes.

Tips for Maximizing Effectiveness and Reducing Wait Time

Insert Correctly: Pushing the suppository far enough past the rectal sphincter (about one inch for adults) is crucial to prevent premature expulsion.
Lubricate: Using a water-based lubricant can facilitate easier insertion.
Lie Still: Remaining in a comfortable position, such as lying on your side, for at least 15-20 minutes allows the suppository to melt and the medication to be absorbed.
Timing: It's best to have a bowel movement before insertion, if possible, to maximize medication absorption.

Comparison of Laxative Suppositories

To help decide which suppository may be right for your needs, here is a comparison of two popular types.


Feature	Glycerin Suppository	Bisacodyl Suppository
Mechanism of Action	Draws water into the intestines to soften stool and lubricate the bowels.	Directly stimulates the rectal muscles to promote contractions and movement.
Onset Time	15–60 minutes.	15–60 minutes.
Sensation	Generally considered a gentler action.	Can cause stronger, more cramping-like sensations due to muscle stimulation.
Common Side Effects	Mild irritation, cramping, gas, or nausea.	Abdominal discomfort, cramps, or rectal irritation.
Best For	Mild, occasional constipation; patients sensitive to stimulant laxatives.	More stubborn or infrequent constipation that requires stronger stimulation.

Troubleshooting and Important Considerations

What happens if you have an urge to poop immediately after inserting the suppository? Try your best to hold it in for at least 15 minutes to allow the medication to work. If the suppository is expelled prematurely, you may not have pushed it far enough beyond the rectal sphincter. This is why remaining still and avoiding immediate straining is important.

Premature Expulsion: If the suppository comes out before dissolving, it may not have been inserted correctly. Re-inserting a new one may be necessary, but consult the package directions or a healthcare provider first.
Rectal Irritation: Some individuals may experience temporary rectal burning or irritation, which is a common side effect for certain types of suppositories.
Underlying Issues: Large amounts of stool in the rectum can act as a barrier, preventing the suppository from melting or being absorbed effectively. For this reason, some recommend a bowel movement before using a suppository for non-constipation-related treatments.
Dependence: Using stimulant laxative suppositories too frequently can cause your bowels to lose their natural function over time. Use is recommended only for occasional constipation unless otherwise directed by a doctor.

Conclusion

The time to a bowel movement after using a suppository is typically short, ranging from 15 to 60 minutes depending on the active ingredient. For quick and effective relief, following the correct insertion technique and waiting the recommended time is essential to allow the medication to melt and act on the bowels. Glycerin suppositories work by attracting water, offering a gentle approach, while bisacodyl directly stimulates muscle contractions. If you're concerned about the timing, side effects, or a lack of response, consulting a healthcare provider is the best course of action. They can offer personalized advice and ensure you are using the right medication for your specific needs.

Authoritative Resource

MedlinePlus: A service of the National Library of Medicine, offers comprehensive and reliable drug information, including details on bisacodyl suppositories. MedlinePlus Bisacodyl Rectal Information

How to properly insert a suppository

Wash your hands. Ensure your hands are clean with soap and water.
Prepare the suppository. Remove the wrapper. If it is too soft, you can chill it in the refrigerator briefly.
Use a lubricant. Apply a small amount of water-based lubricant to the tip, or dip it in water.
Find a comfortable position. Lie on your side with one knee bent toward your chest, or stand with one leg on a chair.
Insert the suppository. Gently push the suppository into the rectum, tapered end first, past the sphincter muscle (about one inch for adults).
Remain still. Lie or sit still for 15 to 20 minutes to allow the suppository to dissolve and be absorbed.
Hold it in. Wait for a strong urge before using the bathroom.

Frequently Asked Questions

A glycerin suppository typically works very quickly, with most people experiencing a bowel movement within 15 to 60 minutes after insertion.

Try to hold the suppository in for at least 15 minutes. The urge is likely due to the insertion itself, and the medication needs time to dissolve and stimulate the bowel for a successful result.

If the suppository came out right away, it likely was not inserted far enough. It needs to be pushed past the muscular sphincter of the rectum to be retained and absorbed properly.

Some suppositories are specifically designed to treat hemorrhoid symptoms like swelling and irritation. However, you should consult a doctor, as conditions like anal fissures or severe hemorrhoids may make rectal insertion painful.

While it may seem counterintuitive, some studies suggest that inserting the blunt end first can improve retention, as the sphincter muscle helps push it inward. However, most people find the pointed end easier to insert.

Yes, using a water-based lubricant on the tip of the suppository can make insertion easier and more comfortable. Avoid using petroleum jelly, as it can inhibit absorption.

If you don't have a bowel movement within the expected timeframe, do not use another suppository right away. You may need to wait and follow up with a healthcare provider to determine the next steps and investigate any underlying issues.