What herbal medication can be used to treat Small Intestine Bacterial Overgrowth (SIBO)?

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Last updated: June 25, 2025View editorial policy

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From the Research

Berberine is the most effective herbal medication for treating Small Intestine Bacterial Overgrowth (SIBO), as evidenced by the most recent and highest quality study 1.

Treatment Protocol

For treatment, a typical herbal protocol involves taking berberine (400mg twice daily) for 2 weeks, as outlined in the BRIEF-SIBO study 1. This study aimed to evaluate the effect of berberine compared with rifaximin on SIBO patients, with a primary outcome of a negative breath test.

Mechanism of Action

Berberine works through its natural antimicrobial properties, modifying the gut microbiota and ameliorating intestinal inflammation in humans 1.

Combination Therapy

While other herbal medications like oregano oil, neem, and allicin (from garlic) have been suggested as potential treatments for SIBO 2, 3, 4, the most recent and highest quality study supports the use of berberine as a primary treatment option 1.

Dietary Modifications

It is essential to combine herbal treatments with dietary modifications that reduce fermentable carbohydrates to enhance effectiveness, as suggested by previous studies 2, 3, 4.

Consultation

Consult with a healthcare provider before starting this regimen, especially if you have other health conditions or take medications, to ensure the best possible outcome and minimize potential side effects.

Quality of Life

A comprehensive therapeutic approach, including pharmacological treatment, dietary intervention, and strategies to improve gut microbiota and intestinal permeability, can produce a sustained improvement in the quality of life of patients with SIBO, as shown in a recent real-world clinical practice study 5.

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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