The UK's No. 1 bestselling brand of friendly bacteria supplements^

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Friendly bacteria for those with IBS

Discover our range of friendly bacteria supplements, each carefully selected for people with IBS. All of our supplements contain strains specifically researched in people with the same type of IBS and are guaranteed to reach the gut alive. Whether you have IBS-A, IBS-C, IBS-D, or a mix, there’s an Optibac product to suit your needs.

Optibac S. Boulardii supplement box with capsules, a glass of tea, bread on a woven mat, and a banana on a white surface.
Person in a green sweater holding a box of Optibac Bifido & Fibre supplement, smiling outdoors.
Person holding a jar of Optibac Every Day EXTRA supplements, with a blurred green background.

Friendly bacteria and IBS: your questions answered

Person holding a box of Optibac Every Day EXTRA probiotics against a green leafy background.
Person holding a jar of Optibac Every Day EXTRA supplements, with a blurred green background.

Every Day EXTRA

Every Day EXTRA Contains the highly researched strains Lactobacillus acidophilus NCFM® and Bifidobacterium lactis Bi-07® which are found naturally in the digestive tract. It's a popular choice for those with IBS-A or IBS-M. 

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A person in a green sweater pours Optibac Bifido & Fibre powder into a glass of water on a kitchen counter. A fruit bowl is nearby.

Bifido & Fibre

Choose Bifido & Fibre if you're looking for a product containing Bifidobacterium lactis BB-12®, which is extensively researched in those with IBS-C so especially suitable for those with this type of IBS.

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Person holding a box of Optibac S. Boulardii digestive supplement with 40 capsules, featuring a yellow design and health claims.

Saccharomyces Boulardii

Saccharomyces boulardii contains the world's only 'friendly yeast'. Saccharomyces boulardii is supported by 50 years of research in thousands of adults and children and is often chosen by those with IBS-D.

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Box of Optibac Gut Health Gummies on a table with a woman in the background sitting on a couch, wrapped in a blanket.

Gut Health Gummies

If you find gummies easier to take, choose Gut Health Gummies. These delicious gummies contain the highly researched strain Bacillus coagulans Unique IS-2, along with Calcium, Vitamin D, and Zinc.

Explore Gut Health Gummies
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Not sure which supplement is best for you?

Our team of friendly experts are here to support you with free, personalised advice - whether you have a question about our supplements, need help choosing the right product, or just want to learn more about live cultures. Get in touch today.

Contact our Nutrition Team

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