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Optibac Saccharomyces Boulardii – 40 Capsules

A natural and unique gut-friendly yeast, proven to reach the gut alive.

Optibac Saccharomyces boulardii is extensively researched and safe for both adults and children. It supports gastro-intestinal health, including loose bowel and upper gastric discomfort. Each capsule provides 5 billion live cultures of pure shelf-stable Saccharomyces Boulardii, so no need to refrigerate.




Availability: In stock

OptiBac – Saccharomyces Boulardii

What’s it for?  Extensively researched, unique friendly yeast proven to reach the gut alive.

Who’s it for?  For anyone, from 1 year onwards, seeking a pure Saccharomyces boulardii supplement.

Each capsule:  Provides 5 billion live cultures of pure, shelf stable Saccharomyces boulardii.

Which specific strain?  Saccharomyces cerevisiae boulardii


OptiBac Saccharomyces boulardii

  • Saccharomyces boulardii is a well-researched, internationally acclaimed strain, proven to survive through stomach acidity to reach the gut alive
  • 5 billion live cultures per capsule, guaranteed until end of expiry
  • Friendly yeast, more robust to environmental stressors than common bacterial live cultures, and especially stable and resistant to heat and humidity
  • No refrigeration required, contrary to some other live cultures supplements
  • Used safely for over 50 years, suitable for vegans and vegetarians, and gluten free for those with coeliac disease or an intolerance
  • All OptiBac strains are thoroughly researched and documented, so you can be confident you are getting the best

OptiBac ‘Saccharomyces boulardii‘ has been created especially for those seeking a natural option. It contains the internationally acclaimed strain of Saccharomyces boulardii in a pure supplement, with no additives or fillers. This well-researched and unique strain has been used safely around the world for over 50 years. Suggested for daily use, each capsule provides 5 billion live microorganisms that will survive through stomach acidity and reach the gut alive. This friendly yeast is more robust to environmental stressors than more common bacterial live cultures, and shows strong resistance to heat, humidity and stomach acidity levels. These live cultures of S. boulardii have been tested and shown to be especially stable and resistant.

Saccharomyces boulardii is a natural and safe microorganism with vast scientific research and documentation. This strain has been internationally acclaimed as a well-researched and unique microorganism, and has been safely used for the last 50 years. Saccharomyces boulardii is a natural food supplement, and not a medicine, and is a unique microorganism which is sold widely in the US, Scandinavia, Germany & France. OptiBac specialise in live cultures and were the first UK company to make a pure Saccharomyces boulardii supplement. In terms of cost per billion microorganisms, the OptiBac Saccharomyces boulardii supplement is the best value supplement currently available in the UK. Saccharomyces boulardii can also be found in our supplement ‘For travelling abroad’ (which contains 1 billion micro organisms per capsule, combined with other live cultures).

Our Saccharomyces boulardii capsules contain no titanium dioxide and thus the capsules appear clear. S. boulardii naturally has a slightly beige colour (unlike other live cultures) and the appearance may vary slightly from capsule to capsule.

Each capsule still contains 5 billion live cultures of Saccharomyces boulardii guaranteed.

It is important to note that this supplement, unlike many other live cultures products, does not require refrigeration due to improvements in freeze drying techniques and the strains within the product that are naturally robust to survive harsher conditions.

Available in three pack sizes of 16, 40 or 80 capsules of live cultures. Each capsule provides a count of over 5 billion natural bacteria.

This is a food supplement and it is not intended to prevent, treat, nor diagnose any medical conditions.

Is this a Probiotic?

You can call it what you like, but the Advertising Standards Authority has ruled that the word "probiotic" is a health claim, so we can no longer describe products containing bacteria like this to be probiotics.


  • Live cultures: Saccharomyces boulardii (250mg)
  • Vegetarian capsule: hydroxypropyl methylcellulose

Each capsule guarantees 5 billion live cultures.

'Saccharomyces boulardii' contains 25.96g protein per 100g, equivalent to 0.07g protein per 275mg capsule.

there is 25.96g per 100g Equivalent to 0.07g per 275mg capsule.

Allergens and Avoidances
Please see product tags above for details of which diets this is suitable for. Suitable for vegetarian and vegan diets.

Weight 0.126 kg


Age Suitability

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What others are saying

  1. henryandnova

    henryandnova (verified owner)

    My son Patrick had an irritable bowl every evening before bedtime for about 6 months. I contacted the wonderful Lucinda Miller who put him on a daily morning and evening dose of this wonderful probiotic and it has made such a difference! Thank you Lucinda Patch has a much happier gut!

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Please note: This product is not intended to prevent, treat, or diagnose any medical conditions. Food supplements should not be used as a substitute for a varied diet and healthy lifestyle. Consult your doctor if you are pregnant, breastfeeding, taking medication or have a medical condition before use. Always read the label.

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