Dealing with Constipation and Probiotic Side Effects: A Patient's Dilemma - Gastroenterology and Hepatology

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Bowel issues


Doctor, I have noticed that my bowel movements have become harder, possibly due to my age, and my stools are more formed and difficult to pass.
Therefore, I purchased some advertised probiotics to help with my bowel movements.
I have tried the probiotics from Formosa Biomedical and the De Yi Ren Sheng Lactobacillus, and they have been effective in softening my stools, making it easier to pass.
However, I have encountered a problem: since taking the probiotics, I find that I am passing gas more frequently, and sometimes the gas has a slight odor that contaminates my underwear, leaving a small yellowish stain with a fecal smell.
Can you explain why this is happening? If I don’t take the probiotics, my bowel movements are hard and formed.
I drink enough water, and while the probiotics help with bowel movements, they also cause this minor contamination in my underwear.
What should I do? This is quite distressing!

Xiao Zhang, 40~49 year old female. Ask Date: 2018/02/10

Dr. Chen Shidian reply Gastroenterology and Hepatology


Hello, you can visit the outpatient clinic and use regular health insurance for laxatives.
Changhua Hospital cares about your health.
Chen Shidian

Reply Date: 2018/02/10

More Info


Dealing with constipation and the side effects of probiotics can indeed be a challenging situation, especially when you are experiencing both benefits and discomfort. Let's break down your concerns and explore some potential solutions.

Firstly, it's great to hear that you've found probiotics helpful for your constipation. Probiotics are live microorganisms that can provide health benefits when consumed in adequate amounts. They are known to improve gut health, enhance digestion, and can help in softening stools, which seems to be the case for you. However, the side effects you are experiencing, such as increased flatulence and the unusual staining of your underwear, are not uncommon when starting probiotics.

The increase in gas production can occur because probiotics can alter the gut microbiota, leading to fermentation of undigested food in the intestines. This fermentation process can produce gas, which may result in bloating and flatulence. While this is generally a temporary side effect, it can be uncomfortable. The staining you mentioned could be due to a few factors:
1. Dietary Changes: If you've changed your diet to include more fiber or other foods that are harder to digest, this could lead to more gas and potentially softer stools that may not be fully contained.

2. Probiotic Strain: Different strains of probiotics can have varying effects on digestion. Some may produce more gas than others. If the specific strains in the probiotics you are taking are particularly fermentative, this could explain the increased flatulence.

3. Gut Sensitivity: Some individuals have a more sensitive gut that reacts strongly to changes in diet or the introduction of new supplements, leading to increased gas and changes in bowel habits.

To address your concerns, here are some recommendations:
1. Adjust Probiotic Intake: If the gas is bothersome, consider reducing the dosage of the probiotics you are taking. You might also try a different brand or strain that is known for being gentler on the digestive system. Look for probiotics that are specifically formulated to minimize gas production.

2. Dietary Considerations: Pay attention to your diet. Foods that are high in fiber, such as beans, lentils, and certain vegetables, can contribute to gas production. Gradually increase your fiber intake to allow your gut to adjust. Additionally, consider keeping a food diary to identify any specific foods that may be contributing to your symptoms.

3. Hydration: While you mentioned that you are drinking enough water, ensure you are maintaining adequate hydration, especially when increasing fiber intake. This can help soften stools and promote regular bowel movements.

4. Consult a Healthcare Professional: If the symptoms persist or worsen, it may be beneficial to consult with a healthcare provider or a gastroenterologist. They can provide personalized advice and may suggest alternative treatments for constipation, such as dietary changes, fiber supplements, or other medications.

5. Monitor Symptoms: Keep track of your bowel movements, gas production, and any other gastrointestinal symptoms. This information can be helpful for your healthcare provider in determining the best course of action.

In summary, while probiotics can be beneficial for managing constipation, they can also lead to side effects like increased gas. Adjusting your intake, monitoring your diet, and consulting with a healthcare professional can help you find a balance that alleviates your constipation without causing discomfort. Remember, it's important to listen to your body and make changes that feel right for you.

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