Herbs and supplements for SIBO
Herbs and supplements for SIBO
Medically reviewed by:
Dr John Freeman
Small Intestinal Bacterial Overgrowth (SIBO) often requires a multi-layered approach to restore balance, repair the gut lining, and relieve the symptoms caused by unwanted bacterial activity in the small intestine. While pharmaceutical antibiotics are one option, herbal antimicrobials and natural gut-supporting compounds have been shown in clinical studies to be highly effective, making them a preferred choice for many people looking for a gentler, holistic strategy.
At FixBIOME, we use a coordinated system of ingredients that work together across four key stages of gut repair. Each category targets a different part of the healing process:
Repair & Restore Integrity – Strengthening the gut lining, supporting tight junctions, and helping the intestine recover from the damage caused by gas pressure, inflammation, and repeated irritation.
Calm, Soothe & Relieve Symptoms – Easing cramping, bloating, discomfort, spasms, indigestion, and the stress-related symptoms that commonly accompany SIBO.
Rebalance the Microbiome – Using targeted herbal antimicrobials to address bacterial or fungal overgrowth, disrupt biofilms, and rebalance the microbial environment in the small intestine.
Protect & Strengthen for Long-Term Resilience – Supporting immune function, mucosal defence, and long-term microbial stability to reduce relapse risk and maintain a healthy gut environment.
Because SIBO affects people on multiple levels—structural, microbial, and symptomatic—each of these ingredient categories plays a crucial role. When combined, they can restore gut integrity, relieve daily discomfort, address the root cause of overgrowth, and support long-term digestive health.
Below is a breakdown of some of the most clinically studied herbs, extracts, and natural compounds used for SIBO recovery, organised according to their primary function in the gut-healing process.
- Tap an ingredient to learn more -
1. Repair & Restore Integrity
1. Repair & Restore Integrity
L-Glutamine
Zinc Oxide
Glycyrrhiza Glabra
Althaea Officinalis
2. Calm, Soothe & Relieve Symptoms
Lemon Balm
Zingiber Officinale
Peppermint
Anethum Graveolens
3. Rebalance the Microbiome
Thyme Oil
Oregano Oil
Berberis Vulgaris
Coptis Chinensis
Berberis Aristata
4. Protect & Strengthen for Long-Term Resilience
Salvia Officinalis
Scutellaria Baicalensis
Quercetin Dihydrate
Rheum Officinale
L-Glutamine
Rebuilds the gut lining from the inside out. Fuels the cells that repair your intestinal wall, helping reduce sensitivity, bloating, and “leaky gut” reactions caused by barrier damage.
Glycyrrhiza Glabra
Targets inflammation in the gut lining to relieve burning, cramping, and irritation. Supports the body’s cortisol regulation to calm stress-driven flare-ups.
Althaea Officinalis
Forms a protective coating along the digestive tract, reducing friction, pain, and irritation while allowing tissue to regenerate effectively.
Zinc Oxide
Essential for tissue repair and immune regulation in the gut. Helps seal tiny gaps in the intestinal wall so food and toxins stop triggering inflammation and discomfort.
2. Calm, Soothe & Relieve Symptoms
1. Repair & Restore Integrity
L-Glutamine
Zinc Oxide
Glycyrrhiza Glabra
Althaea Officinalis
2. Calm, Soothe & Relieve Symptoms
Lemon Balm
Zingiber Officinale
Peppermint
Anethum Graveolens
3. Rebalance the Microbiome
Thyme Oil
Oregano Oil
Berberis Vulgaris
Coptis Chinensis
Berberis Aristata
4. Protect & Strengthen for Long-Term Resilience
Salvia Officinalis
Scutellaria Baicalensis
Quercetin Dihydrate
Rheum Officinale
Lemon Balm
Eases cramping, bloating, and stress-related gut tension by relaxing smooth muscle in the intestines and supporting balanced motility.
Zingiber Officinale
Improves how quickly food moves through your system to stop that heavy, sluggish feeling after meals. Reduces nausea and supports smoother digestion.
Anethum Graveolens
Reduces post-meal bloating and discomfort by helping your body release gas and digest food more efficiently.
Peppermint Oil
Relaxes tight intestinal muscles to relieve pain and pressure from trapped gas, helping your stomach feel flatter and lighter.
1. Repair & Restore Integrity
L-Glutamine
Zinc Oxide
Glycyrrhiza Glabra
Althaea Officinalis
2. Calm, Soothe & Relieve Symptoms
Lemon Balm
Zingiber Officinale
Peppermint
Anethum Graveolens
3. Rebalance the Microbiome
Thyme Oil
Oregano Oil
Berberis Vulgaris
Coptis Chinensis
Berberis Aristata
4. Protect & Strengthen for Long-Term Resilience
Salvia Officinalis
Scutellaria Baicalensis
Quercetin Dihydrate
Rheum Officinale
3. Rebalance the Microbiome
1. Repair & Restore Integrity
L-Glutamine
Zinc Oxide
Glycyrrhiza Glabra
Althaea Officinalis
2. Calm, Soothe & Relieve Symptoms
Lemon Balm
Zingiber Officinale
Peppermint
Anethum Graveolens
3. Rebalance the Microbiome
Thyme Oil
Oregano Oil
Berberis Vulgaris
Coptis Chinensis
Berberis Aristata
4. Protect & Strengthen for Long-Term Resilience
Salvia Officinalis
Scutellaria Baicalensis
Quercetin Dihydrate
Rheum Officinale
Thyme Oil
Targets bacterial and fungal overgrowth that cause bloating, fatigue, and “gut fog.” Helps clear unwanted microbes so beneficial bacteria can repopulate.
Oregano Oil
Highly active against bacterial imbalance and yeast overgrowth. Works like a microbial reset, helping reduce bloating and digestive irritation.
Coptis Chinensis
Delivers berberine and related alkaloids that limit gut-driven inflammation and support a healthier microbial ratio for more stable digestion.
Berberis Aristata
Assists in clearing bacterial build-up and supports detoxification so your gut can reset to a healthier baseline.
Berberis Vulgaris
Provides berberine compounds that fight harmful bacteria while improving bile flow, key for digesting fats and reducing constipation.
4. Protect & Strengthen for Long-Term Resilience
1. Repair & Restore Integrity
L-Glutamine
Zinc Oxide
Glycyrrhiza Glabra
Althaea Officinalis
2. Calm, Soothe & Relieve Symptoms
Lemon Balm
Zingiber Officinale
Peppermint
Anethum Graveolens
3. Rebalance the Microbiome
Thyme Oil
Oregano Oil
Berberis Vulgaris
Coptis Chinensis
Berberis Aristata
4. Protect & Strengthen for Long-Term Resilience
Salvia Officinalis
Scutellaria Baicalensis
Quercetin Dihydrate
Rheum Officinale
Salvia Officinalis
Reduces gut-based inflammation that drives food reactivity and discomfort. Helps protect the lining long-term from oxidative stress.
Scutellaria Baicalensis
Decreases inflammatory signaling in the gut wall and helps reinforce the protective barrier that keeps irritants out of your bloodstream.
Rheum Officinale
Encourages gentle, regular elimination to prevent toxin build-up and constipation or other bowel irregularities without overstimulating your system.
Quercetin Dihydrate
Supports immune stability in the gut. Strengthens barrier integrity and reduces inflammation behind chronic food sensitivities and fatigue.
1. Repair & Restore Integrity
L-Glutamine
Zinc Oxide
Glycyrrhiza Glabra
Althaea Officinalis
2. Calm, Soothe & Relieve Symptoms
Lemon Balm
Zingiber Officinale
Peppermint Oil
Anethum Graveolens
3. Rebalance the Microbiome
Thyme Oil
Oregano Oil
Berberis Vulgaris
Coptis Chinensis
Berberis Aristata
4. Protect & Strengthen for Long-Term Resilience
Salvia Officinalis
Scutellaria Baicalensis
Quercetin Dihydrate
Rheum Officinale
L-Glutamine
Essential amino acid that fuels gut repair, supports lining integrity, and promotes long-term digestive wellness.
Lemon Balm
Helps calm the nervous system and relieve digestive tension supporting gut-brain harmony and balance.
Zingiber Officinale
Ginger root that naturally stimulates digestion, reduces bloating, and soothes the digestive tract.
Salvia Officinalis Extract
Traditionally used to aid digestion and calm the nervous system, supporting internal balance and clarity.
Scutellaria Baicalensis
Traditional root extract that supports immune regulation and helps calm inflammatory responses in the gut.
Quercetin Dihydrate
Traditional root extract that supports immune regulation and helps calm inflammatory responses in the gut.
Thyme Oil
Traditionally used to aid digestion and calm the nervous system, supporting internal balance and clarity.
Rheum Officinale
Traditional root extract that supports immune regulation and helps calm inflammatory responses in the gut.
Althaea Officinalis
Traditional root extract that supports immune regulation and helps calm inflammatory responses in the gut.
Oregano Oil
Traditionally used to aid digestion and calm the nervous system, supporting internal balance and clarity.
Glycyrrhiza Glabra
Traditional root extract that supports immune regulation and helps calm inflammatory responses in the gut.
Berberis Vulgaris
Traditional root extract that supports immune regulation and helps calm inflammatory responses in the gut.
Peppermint
Traditionally used to aid digestion and calm the nervous system, supporting internal balance and clarity.
Coptis Chinensis
Traditional root extract that supports immune regulation and helps calm inflammatory responses in the gut.
Berberis Aristata
Traditional root extract that supports immune regulation and helps calm inflammatory responses in the gut.
Anethum Graveolens
Traditionally used to aid digestion and calm the nervous system, supporting internal balance and clarity.
Zinc Oxide
Traditional root extract that supports immune regulation and helps calm inflammatory responses in the gut.
Quality of herbs and natural antimicrobials
When choosing supplements or herbal products, it’s important to understand that quality can vary dramatically—especially in an industry with limited regulation. Two products may list the same ingredient on the label, yet perform very differently in the body.
Because these are natural compounds, their effectiveness depends heavily on factors such as growing conditions, sourcing, extraction methods, and manufacturing standards. These differences can influence potency, purity, and most importantly, bioavailability—the body’s ability to absorb and utilise the ingredient for its intended purpose.
Selecting high-quality, well-formulated herbs ensures you receive the full therapeutic benefits these compounds are capable of providing.
The FixBIOME Gut Reset Course is a practitioner-designed, clinically dosed protocol created to resolve gut issues at their root.
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Strengthens your gut's natural ecosystem and supports the growth of beneficial bacteria in a way that's unique to you.
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