Optibac Probiotics Saccharomyces Boulardii (Bowel Calm) 16 veg capsules

Reference: 16117298

5 billion live cultures of Saccharomyces boulardii. Extensively researched, unique friendly yeast proven to reach the gut alive.



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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).

These 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.




  • Natural food supplement suitable for adults and children (from 1 year upwards) with the following recommendations, or as professionally directed:
  • Take one to four capsules depending on severity of symptoms and up to six capsules daily, or as professionally directed
  • If taking anti-fungals, take separately (at least 2 hours apart).
  • For infants and children the dose should be lowered.
  • Drink plenty of water with your course of live cultures.
  • For anyone unable to swallow capsules, capsule can be opened and contents mixed with a cold meal or beverage.

Food supplements should not be used as a substitute for a healthy diet and lifestyle. Those with serious medical conditions should consult their doctor before use.

OptiBac will not cause dependency, and may be used on an ongoing basis.


Like the rest of the OptiBac range, 'Saccharomyces boulardii' does not require refrigeration. Store out of direct sunlight.


  • 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.

Suitable for vegetarian and vegan diets.


Live cultures are not recommended for those with serious medical conditions e.g. those who are severely immunosuppressed, have pancreatitis, are in the ICU, have melaena, have a central venous catheter, infants with short bowel syndrome, or patients with open wounds following major surgery; unless under a doctor's care.


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