SIBO INFO Blog

Quick answer: Yes, in 2025 studies were published showing an increased risk of SIBO with the use of GLP-1 medications, especially with 1 year or more of use. See Note, below.

This video delves into the growing use of GLP-1 medications, such as Ozempic, Mounjaro, Wegovy, and Zepbound, and their potential implications for gastrointestinal health, particularly concerning SIBO. It explores the balance between treating conditions like obesity and diabetes with potential unintended consequences.

Key Discussion Points:

• Rise of GLP-1: The significant increase in publication and awareness surrounding semaglutide and similar drugs in the past year.
• Mechanism of Action: These medications are known to slow stomach emptying and upper GI motility.
• Impact on SIBO Tests: The slowed stomach emptying can affect the results of SIBO tests, as substances may not leave the stomach as expected.
• Potential Link to SIBO:
  • While direct evidence is still developing at the time of recording ("early days"), the consensus is that anything slowing gut transit can logically lead to bacterial buildup (SIBO). 
  • The long-term effects of these medications on SIBO prevalence are not yet fully understood.
  • See Note below, for newer research.
• Implications for Existing SIBO:
  • For individuals already diagnosed with SIBO, some report that these medications can worsen symptoms like bloating due to further slowing of motility.
  • However, the reduced food intake associated with these drugs might lead to less fermentation, potentially balancing out the negative effects.
  • The overall impact on existing SIBO might be neutral for some, neither significantly worsening nor improving symptoms.
• Need for Further Research: Given the widespread and increasing use of these medications, studies are needed to understand their long-term gastrointestinal consequences.

Key Takeaways:

• Semaglutide and other GLP-1 drugs significantly impact gut motility, which has implications for small intestinal bacterial overgrowth.
• The effect of these medications on individuals with pre-existing SIBO is complex and can vary, with both potential for symptom worsening and mitigation due to reduced food intake.
• The rapid adoption of these drugs necessitates ongoing research into their full spectrum of effects. (See NOTE below)

NOTE:
Since the recording of this video, new studies showing a link between GLP-1 medicines and risk for SIBO have been published:

• Diagnostic Evaluation of an Increased Risk of Developing Small Intestinal Bacterial Overgrowth Associated with Glucagon-like Peptide-1 (GLP-1) Receptor Agonists and Dual GLP-1/GIP Receptor Agonists: A Global Retrospective Multicenter Cohort Analysis.  PMID: 40941750
  • Summary: this is the first large-scale study to identify an increased incidence of SIBO associated with GLP-1/GIP diabetes medications [Ozempic, Mounjaro]. The risk is associated with longer-term use (1 year). 

• GLP-1 Receptor Agonist Use Is Associated with Small Intestinal Bacterial Overgrowth and Intestinal Methanogen Overgrowth. DOI: https://doi.org/10.1177/26345161251353437
  • ​Summary: “GLP1 use is associated with SIBO, although diabetes may be a confounder.”

​​Products mentioned:
-GLP-1 medicines are Ozempic and Wegovy (Semaglutide)
-GLP-1 + GIP medicines are Mounjaro and Zepbound (Tirzepatide)

This video introduces a groundbreaking new treatment for constipation, a non-pharmacological vibrating capsule called "Vibrant". 

Current Treatments Discussed:

• Laxatives
• Secretagogues
• Drugs that stimulate gut motility
• Surveys indicate that roughly half of patients with constipation are dissatisfied with current therapies due to issues with safety, efficacy, tolerability, and predictability.

The New Device "Vibrant" capsule:

• Mechanism: Patients swallow a capsule containing a vibrating device. This device gently vibrates and oscillates within the body, interacting with the gut-brain axis and mechanically stimulating colonic peristalsis.
• Approach: This is a non-pharmacological, device-based therapy.

Clinical Study Highlights:

• Outcome Measures: The study used ambitious primary outcome measures, including an increase of two complete spontaneous bowel movements per week.
• Efficacy Results:
  • Both primary outcome measures were successfully achieved.
  • Double the amount of patients reached the benchmarks vs the placebo group (11% placebo vs. 22% of patients in the vibrating capsule arm, met the benchmarks).
• Safety and Tolerability:
  • The therapy demonstrated an excellent safety profile with "literally no adverse effects."
  • Approximately 10% of patients reported a vibrating sensation, but this was not severe enough to cause them to withdraw from the study.
  • Crucially, common side effects associated with pharmaceutical treatments, such as diarrhea, nausea, and headache, were not reported.

Usage and Administration:

• The capsule is taken five days a week (Monday, Tuesday, Thursday, Friday, and Sunday).
• The capsules are passed naturally and are disposable.

Conclusion:

• This new vibrating capsule therapy offers a potential solution for chronic constipation patients, providing a more controlled, predictable, efficacious, and safe approach. It brings hope for individuals who have not found relief from existing treatments.

Products mentioned:

• Vibrant Capsule for Constipation

Dr. Pimentel gives a presentation, followed by Q&A.

Summary:
How Food Poisoning Starts IBS/SIBO
Dr. Pimentel explains that food poisoning is a major cause of IBS/SIBO. About one in nine people who get food poisoning will end up with IBS/SIBO. This is often called post-infectious IBS.

Mechanisms
With food poisoning, the body can react to a toxin called cdtB. This toxin is made by common food poisoning bacteria like Salmonella and Campylobacter. The immune system tries to fight the toxin. Sometimes, the immune system gets confused and starts to attack a protein in your own body called vinculin.

The Role of Anti-Vinculin Antibodies
Vinculin is very important for gut nerves. It helps the nerve cells connect and talk to each other. These nerves control the "cleaning waves" (migrating  motor complex) in the small intestine. When the body attacks vinculin, these nerves get damaged. This leads to several problems:

• The gut stops moving correctly.
• Food and waste stay in the small bowel too long.
• Bacteria start to grow where they do not belong.

This process meets all the rules of science to prove it causes the disease. If you have these antibodies in the blood, you likely have post-infectious IBS. This is a big step because it gives patients a clear answer. You can now take a blood test to see if this is why you are sick. ​(IBS-Smart)

Understanding SIBO and the Bad Bugs
Small Intestinal Bacterial Overgrowth (SIBO) happens when too many bacteria live in the small bowel. In a healthy person, the small bowel is relatively clean. In someone with SIBO, the bacteria ferment food and create gas. This gas causes the bloating and pain that IBS patients feel every day.

Dr. Pimentel found that SIBO is not just "any" bacteria. It is usually two specific types: E. coli and Klebsiella (hydrogen SIBO). These bugs are very good at eating sugar and making gas. They can produce gas 63 times faster than normal bacteria. This is why you might feel bloated just 15 minutes after eating.

The New Rule for SIBO Diagnosis by culture (for research)
For a long time, doctors disagreed on how to diagnose SIBO using a culture. New research has settled the debate. A patient has SIBO if they have more than 1,000 bacteria per milliliter in their small bowel juice. This is also written as 10 to the 3rd power. Using this count helps doctors be more accurate. It ensures that patients get the right diagnosis and the right care.

Methane and the Struggle with Constipation
Not all IBS is the same. Some people have diarrhea, while others have constipation. If you struggle with constipation, you might have IMO. This stands for Intestinal Methanogen Overgrowth. This is caused by a tiny organism called M. smithii.

Methane gas is different from other gases. It acts like a brake on your gut. It causes the muscles in your intestine to spasm. This prevents waste from moving through. The more methane you have, the more constipated you will be.

Why Methane is Unique

• It is produced by organisms called methanogens - archaea, not bacteria.
• It eats hydrogen gas to create methane.
• It is often found in both the small and large intestines.

Because methane eats hydrogen, a standard breath test can be tricky to read. You cannot just add the gas numbers together. You need a doctor who understands how these gases interact to get a good plan.

The Discovery of Hydrogen Sulfide
For years, some patients had all the symptoms of SIBO but their breath tests looked normal. Scientists have now found a third gas called hydrogen sulfide. This gas is linked to diarrhea and urgency. It was hard to find because the gas is very reactive. It disappears quickly.

Researchers had to build a new machine to measure this gas. They found that certain bugs like Proteus and Desulfovibrio produce it. This is a huge win for patients who felt ignored. Now there is a test that measures all three gases: hydrogen, methane, and hydrogen sulfide. (Trio Smart) If you have diarrhea and your other tests were negative, this might be the answer.

Better Ways to Test Your Gut
The best way to check for these gases is a breath test. But you must do the test correctly. Dr. Pimentel suggests using a lactulose breath test. Lactulose travels through the entire small bowel. This allows the test to find bacteria even at the very end of the small intestine.

New Treatments on the Way
Treating SIBO is about more than just killing bugs. It is about restoring the balance of the gut. Rifaximin is the most common antibiotic used for IBS with diarrhea. It stays in the gut and does not enter the blood. This makes it very safe.

Rifaximin and NAC
Some bacteria hide in a layer of mucus in the gut. This makes them hard to kill. Dr. Pimentel is testing a new way to use Rifaximin with NAC (N-acetylcysteine). NAC helps thin the mucus. This allows the antibiotic to reach the bacteria and kill them. A large study on this new treatment is starting soon. This could be a huge help for people who do not get better with Rifaximin alone.

The Power of the Elemental Diet
If antibiotics do not work, some doctors use an Elemental Diet. This is a liquid diet where the food is already broken down. The body absorbs the nutrients quickly. This leaves no food for the bacteria, and they starve.

In the past, these diets tasted very bad. A new version called mBiota is now available. It tastes much better and is easier to finish. Research shows it can clear hydrogen and methane gases very well. It is a tough two-week plan, but it works for many people.

Hormones, Menopause, and Gut Health
Women often notice their gut issues change during menopause. New data from the Reimagine Study shows a link between hormones and the microbiome. Women on hormone replacement therapy (HRT) had better gut bacteria. Their microbiomes looked like those of much younger women. If you are going through menopause and have IBS, this is an important topic to discuss with your doctor.

The Impact of GLP-1 Drugs like Ozempic
Many people are now taking drugs like Ozempic for weight loss. These are called GLP-1 drugs. These drugs work by slowing down the stomach. This makes you feel full longer. However, they make SIBO testing very difficult.

If your stomach is too slow, the test liquid never reaches the bacteria. This results in a "flat line" on the test. Dr. Pimentel recommends stopping these drugs for at least one week before a breath test. He also warns that these drugs are so strong that they can cause new gut symptoms that look like SIBO.

Optimism for the Future
The world of IBS research is moving faster than ever. We have gone from thinking IBS was "all in your head" to finding the exact bugs and toxins involved. We have better blood tests to find the cause. We have better breath tests to find the gas. And most importantly, we have better treatments coming every year.
​
If you have been suffering, do not give up. Talk to your doctor about the three-gas breath test (Trio Smart) and the new antibody tests (IBS-Smart). Science is finally catching up to your symptoms. The goal is to get your gut moving again and get your life back. Better days are ahead for everyone with IBS and SIBO.

This video delves into the role of Atrantil in managing methane-SIBO (IMO), addressing common questions about its use, effectiveness, and potential side effects.

Key Discussions and Takeaways:

• Atrantil Mechanism of Action:
  • Atrantil is described as having a mild killing effect but primarily works by inhibiting the production of methane by archaea and bacteria in the gut.
  • The focus is on reducing methane itself, as it is the gas that causes symptoms and aggravation.
• Usage and Combinations:
  • It is commonly combined with herbs that target hydrogen, such as oregano, berberine, or neem, as hydrogen is typically present when methane is produced.
  • Atrantil can also be used effectively on its own for methane SIBO (IMO).
• When and How to Continue Use:
  • If Atrantil proves successful in controlling symptoms and/or shows good results on a SIBO breath test, it is recommended to continue its use.
  • It should be continued at a low dose (e.g., one to three capsules per day) on an ongoing basis to maintain the inhibition of methane production. This approach is taken because the herbs are needed to inhibit methane formation and the bacteria may not be entirely eradicated.
• Potential Side Effects:
  • While Atrantil can cause individual reactions, a potential reason for worsening symptoms could be "die-off," a mild killing effect that herbs can sometimes induce.
  • The tannins present in Atrantil can also be bothersome for some individuals.
  • Identifying what is causing a 'reaction' can take time. It's important to recognize that many factors can influence reactions, and it may take several attempts (three times) to accurately attribute symptoms to a specific substance versus confounding factors.
• Atrantil vs. Prokinetics:
  • Atrantil is not a prokinetic.
  • If gut motility is a concern, a prokinetic would need to be used in addition to Atrantil.

This discussion provides guidance on leveraging Atrantil for methane management, emphasizing its primary role in inhibiting methane production and the importance of individualized assessment and follow-up.

Product Mentioned:

• "Atrantil": https://us.fullscript.com/plans/asiebecker-herbal-antibiotics-for-sibo (discounted at Fullscript), https://amzn.to/3Gwd8Yh (Amazon)
  
• Allicin "Allimed"/"Allimax Pro": https://us.fullscript.com/plans/asiebecker-herbal-antibiotics-for-sibo (discounted at Fullscript), https://amzn.to/3Tg4bdb (Amazon)
  
• Berberine: https://us.fullscript.com/plans/asiebecker-herbal-antibiotics-for-sibo (discounted at Fullscript), https://amzn.to/4a6pmEI (Amazon)
  
• Oregano "ADP": https://us.fullscript.com/plans/asiebecker-herbal-antibiotics-for-sibo (discounted at Fullscript), https://amzn.to/3T94BSO (Amazon)
  
• Neem: https://us.fullscript.com/plans/asiebecker-herbal-antibiotics-for-sibo (discounted at Fullscript), https://amzn.to/3RaPPIH (amazon)

This video discusses strategies for weight gain in SIBO, especially for those who are underweight and struggling with weight loss.

Addressing SIBO Directly

• The primary recommendation is to focus on treating the SIBO itself.
• Once the SIBO overgrowth is reduced, the body's ability to absorb food is likely to improve.
• This improvement occurs because the bacteria will be less active in competing for nutrition and causing damage that hinders absorption.
• If you are not currently treating SIBO, starting this process is the first priority.

Dietary Adjustments for Caloric Intake

• A significant aspect of recovery involves increasing overall caloric intake.
• Increasing Fat Intake:
  • Incorporate more fats into your diet.
  • Examples include eating more pork, such as bacon and rib dishes.
  • If dairy is tolerated, use lactose-free options like cream, sour cream, or make homemade yogurt using half-and-half for increased fat content.
• Sweetened Beverages:
  • Consider getting calories from sweetened beverages, choosing sweeteners that do not cause adverse reactions.
  • Homemade lemonade and eggnog are suggested options.

Optimizing Meal Spacing and Timing

• Frequency of Meals: While food can cause symptoms for SIBO, consider eating more often as a general strategy for caloric intake.
• Meal Spacing:
  • Reduce the strictness of long meal spacing (e.g., 4-5 hours).
  • The goal is to maintain a 12-hour overnight fast to allow for the migrating motor complex, which is crucial for gut health.
  • You might consider a shorter spacing of around three hours between breakfast and lunch.
  • Eating snacks through the afternoon and evening can help increase caloric intake.