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3/26/2026

Q&A: Why Do SIBO Treatments Worsen My Symptoms? Is it MCAS/Histamine Intolerance?

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This video addresses challenges encountered with SIBO treatment protocols and explores potential underlying issues and alternative approaches.

A Patient's SIBO Treatment Experience
  • A patient has undergone 4 treatment protocols, including elemental diet, antibiotics and herbs.
  • Each treatment cycle has unfortunately worsened SIBO and food sensitivities.
  • She is experiencing severe symptoms such as brain fog, making work impossible, joint pain, and insomnia.
  • The patient is seeking to understand if she's missing a root cause or what other strategies she could try.
Addressing Difficult SIBO Cases
  • Dr. Allison Siebecker notes that more information is needed for a proper analysis, including test results (before and after) and details of past treatments.
  • However, for individuals experiencing severe symptoms from SIBO treatments, common considerations include:
    • Yeast overgrowth (which can cause worse die-off vs bactaria)
    • Histamine sensitivity (MCAS or histamine intolerance)
    • Mold exposure
  • These conditions can complicate SIBO treatment due to adverse reactions to the treatments.
A Success Story with Cromolyn for MCAS
  • A participant shares her positive experience starting cromolyn.
  • She takes 200 milligrams orally three times a day for MCAS.
  • Within 20 days, all her symptoms have reportedly disappeared, which is highlighted as a significant positive outcome.
Alternative Approach for Histamine Intolerance (MCAS)
  • A colleague who treats many MCAS, Lyme, and mold cases, utilizes an interesting protocol.
  • This approach involves using traditional over-the-counter antihistamines.
  • The doses are adjusted to be lower, such as cutting pills in half or using child dosing, taken three times a day.
  • This method has shown excellent results for her patients.
Key Takeaway
  • Mast Cell Activation Syndrome (MCAS) is frequently an underlying factor for individuals dealing with difficult-to-treat SIBO.
Product Mentioned:
~Cromolyn Sodium prescription Rx for histamine intolerance/MCAS
~standard antihistamines  

For more on treating Tough SIBO see: Tough SIBO Masterclass by Dr. Siebecker

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3/19/2026

Q&A: How to prevent Food Poisoning and How to treat it?

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The video addresses the common desire to avoid food poisoning and stomach flu.
Key Discussion Points:
  • Recommendations for Food Poisoning:
    • Dr. Pimentel's suggestion involves rapid testing to identify the specific organism responsible for food poisoning, followed by targeted antibiotic treatment. This approach is noted as not always practical due to time and accessibility constraints.
    • An alternative recommendation mentioned by colleagues, particularly for travel, is the regular intake of certain remedies with meals, such as Allimed, though this is considered impractical for daily life.
  • Practical Prevention and Intuition:
    • A key takeaway is the importance of careful food handling and selection, such as being mindful of how long perishable items like mayonnaise-based dishes are left out.
    • The video highlights trusting one's intuition and gut feelings as a valuable "early warning device" for potential food safety issues.
  • Enhancing Gut Health with Probiotics:
    • The discussion emphasizes the benefits of probiotics, noting that they can be obtained from dietary sources and supplements.
    • Examples of foods rich in probiotics include sauerkraut, sauerkraut juice, yogurt, and various other fermented vegetables.
    • Consuming these fermented foods is suggested to help strengthen the gut's immunity.
Product Mentioned:
~ Allimed/Allimax Pro: https://amzn.to/3Tg4bdb (Amazon) https://us.fullscript.com/plans/asiebecker-herbal-antibiotics-for-sibo (discounted at Fullscript)
~ Probiotics: (discounted at Fullscript here)

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3/12/2026

Q&A: Mixed SIBO, Leaky Gut, Gastritis ... Which Do I Treat First?

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This video delves into the intricate process of treating multiple gut health conditions concurrently, specifically focusing on gastritis, SIBO (Small Intestinal Bacterial Overgrowth), and leaky gut, especially when treatment tolerance is a concern.
Key Discussion Points:
  • Prioritizing Treatment for Tolerance: When faced with gastritis, mixed SIBO, and leaky gut, the initial consideration is to choose treatments that are better tolerated. Pharmaceutical antibiotics are generally preferred over herbals due to their better tolerability, particularly with gastritis.
  • Pharmaceutical Antibiotics:
    • Rifaximin is highlighted as a strong option. It is well-tolerated, especially with gastritis, and possesses significant anti-inflammatory properties, making it suitable for addressing multiple issues.
    • For mixed SIBO, treatments like neomycin and metronidazole can cause stomach upset.
    • Alinia [Nitaoxanide] (known by other names outside the US) is suggested as a gentler alternative that typically does not upset the stomach. A combination of Rifaximin, Neomycin, or Metronidazole (or Alinia) could potentially treat gastritis, leaky gut, and SIBO simultaneously.
  • Herbal Support for Leaky Gut:
    • Berberine is mentioned as a historical treatment that helps tone, strengthen, and soothe mucous membranes. It is recommended as a good option for leaky gut and for tolerance with gastritis.
    • Other supplements that can support leaky gut and may help gastritis without aggravating SIBO include colostrum, fish oil, zinc, zinc carnosine, and vitamin D. These are generally non-mucilaginous and non-fibrous.
  • Overall Strategy: The recommended approach is to address the most bothersome conditions with well-tolerated options first, aiming for a comprehensive treatment that can resolve gastritis, leaky gut, and SIBO concurrently.

Products mentioned:
~ Antibiotics: Rifaximin (Xifaxan), Neomycin, Metronidazole (Flagyl), Nitazoxanide (Alinia).
~ Berberine: https://us.fullscript.com/plans/asiebecker-herbal-antibiotics-for-sibo (discounted at Fullscript), https://amzn.to/4a6pmEI (Amazon)
~ Allicin - Allimed/Allimax Pro: https://amzn.to/3Tg4bdb (Amazon), https://us.fullscript.com/plans/asiebecker-herbal-antibiotics-for-sibo (discounted at Fullscript)
~ Atrantil: https://amzn.to/3Gwd8Yh (Amazon), https://us.fullscript.com/plans/asiebecker-herbal-antibiotics-for-sibo (discounted at Fullscript)
~ Leaky gut: https://us.fullscript.com/plans/asiebecker-leaky-gut (discounted at Fullscript)

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3/5/2026

Q&A: My SIBO Glucose Breath Test Was Negative. Is It Accurate?

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This video addresses patient's experience with SIBO symptoms and the interpretation of their recent Trio Smart breath test results using glucose.
Listener's Situation and Test Results
  • The listener reports classic SIBO symptoms such as bloating and gas.
  • They underwent a Trio Smart test using glucose, which showed normal results except for a slight increase in hydrogen approximately four hours into the test.
  • Confusion arose as the standard test duration is only two hours, and the observed increase was beyond this timeframe and not considered positive.
Expert Analysis: The Glucose Breath Test
  • Dr. Siebecker advises against using glucose for SIBO testing, deeming it an ineffective substrate for diagnosis.
  • The primary reason cited is that glucose is absorbed very early in the small intestine, specifically within the first three feet. This rapid absorption may prevent it from reaching areas where SIBO bacteria could ferment it and produce measurable gases, leading to potential false negatives or inconclusive results.
  • A reference is made to Dr. Hawrelack's insights on this topic, with a resource shared for further viewing.
Recommended Next Steps for Testing
To achieve a more accurate diagnosis, the following alternatives are recommended:
  • Redo the Test with a Different Substrate:
    • Fructose: Suggested as a more effective substrate than glucose.
    • Lactulose: Recommended if available. Dr. Allison Siebecker notes that lactulose is often easier to obtain via prescription from a primary care physician because it is commonly recognized and prescribed as a laxative.
  • Consider FoodMarble: an at home hand held device
  • Utilize Trio Smart Again: The expert specifically suggests redoing the Trio Smart test because it has the capability to test for hydrogen sulfide, in addition to hydrogen and methane. This provides a more comprehensive assessment.
The core takeaway is that the choice of substrate in a breath test is critical for accurate SIBO diagnosis, and glucose may not be the most suitable option for all individuals.

Tests mentioned:
- Lactulose SIBO tests can be ordered directly by anyone, via the following:
  • True Health (all U.S. states, Canada, Europe)
  • Direct Labs (U.S. [excluding NY, NJ, RI] Canada, Europe)
  • Rupa Heath: Genova (U.S. excluding NY, NJ, RI)
  • Trio-Smart (all U.S. states) 
- 25g Fructose can be used with Foodmarble SIBO test

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This website is not intended to provide diagnosis, treatment or medical advice. Content is for informational purposes only. Always consult with a licensed healthcare professional regarding any medical or health related diagnosis or treatment options. Information on this website should not be considered as a substitute for advice from a licensed healthcare professional that knows your individual information. References to and statements made about specific products on this we website have not been evaluated by the U.S. Food and Drug Administration (FDA) and are not intended to diagnose, treat, cure or prevent any disease.
  • HOME
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