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SIBO (Small Intestinal Bacterial Overgrowth) is a digestive disorder whereby there is an overgrowth of bacteria in the small intestine. It can lead to a variety of uncomfortable symptoms and can be tricky to manage. There are a number of supplements for that can support gut health and restore balance.

What is SIBO?

SIBO occurs when there is an excessive growth of bacteria in the small intestine which disrupts the normal digestive processes and can lead to symptoms such as bloating, gas, abdominal pain, diarrhoea, and malabsorption of nutrients.

What are the symptoms of SIBO?

Common symptoms of SIBO include bloating, gas, abdominal discomfort, diarrhoea, constipation, and nutrient deficiencies. These symptoms can significantly impact quality of life and require targeted treatments to alleviate any discomfort.

What causes SIBO?

SIBO can have various underlying causes, including impaired gut motility, structural abnormalities in the digestive system, a weakened immune system, and certain conditions such as Crohn's disease or celiac disease. Identifying and addressing the root cause is crucial for effective management.

How do I know if I have SIBO?

Identifying SIBO can be challenging as its symptoms often overlap with other digestive concerns. Diagnostic tests, such as a hydrogen breath test or stool analysis, may be conducted to measure the levels of specific gases or bacteria in your gut, to detect the presence of SIBO.

How can I manage SIBO?

Aside from supplements, the low FODMAP diet is often used to help manage SIBO. The low FODMAP diet restricts fermentable carbohydrates that can feed the bacteria in the small intestine, aiming to minimise symptoms and create an environment less conducive to bacterial overgrowth. Working with a qualified healthcare professional can help manage SIBO on an individual basis.

Do digestive enzymes help with SIBO?

Digestive enzymes can be beneficial for those with SIBO, as they help break down food and facilitate the absorption of nutrients. Choose enzyme blends that contain proteases, lipases, and amylases specifically formulated to support optimal digestion, without exacerbating SIBO symptoms.

The best supplements for SIBO:

Herbal Antimicrobials

Certain herbal supplements, such as oregano and berberine extract, have antimicrobial properties and can help reduce the overgrowth of bacteria in the small intestine. Oregano oil has traditionally been used to support gut health, and berberine has demonstrated significant antimicrobial activity.


Selecting the right probiotic is important for managing SIBO. The best probiotics for SIBO include strains that have been shown to support gut health, such as Bifidobacterium bifidum, and Saccharomyces boulardii. These probiotics help restore a healthy balance of gut bacteria, and improve digestive function.

Digestive Enzymes

SIBO can impair the production and activity of digestive enzymes, leading to poor nutrient absorption. Taking a digestive enzyme supplement can help improve digestion and nutrient absorption, which may help alleviate symptoms and support overall gut health.

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