Saccharomyces boulardii

40 capsules


(ex. tax)
4.6/5 (72 reviews) Read the product reviews

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Suitable for



Dairy free

Dairy free

Gluten free

Gluten free




OptiBac Probiotics 'Saccharomyces boulardii' contains 5 billion CFU live cultures of pure Saccharomyces boulardii. An extensively researched, unique friendly yeast, clinically proven to support gut health and digestion*. 

saccharomyces boulardii press

Probiotic strains & ingredients

  • Saccharomyces boulardii
  • Product description

  • How to use

  • Ingredients

  • Help & advice

  • Reviews

  • Product description

    Friendly bacteria expert Farah (Natural Sciences BSc Hons) explains OptiBac 'Saccharomyces boulardii'

    Who is 'OptiBac Probiotics Saccharomyces boulardii' for​?

    For anyone with occasional diarrhoea*. 

    Key benefits

    • Each capsule provides 5 billion live cultures of pure, shelf stable Saccharomyces boulardii. The billions count is guaranteed until end of expiry.
    • Saccharomyces boulardii is an extensively researched, internationally acclaimed strain and has been used safely for over 50 years.
    • Found in scientific research to support digestive health, including occasional diarrhoea*. 
    • Scientifically proven to survive stomach acidity and reach the gut alive. 
    • Easy to take on the go – no refrigeration required.
    • Suitable for vegetarians, vegans, and is gluten free for those with coeliac disease or an intolerance.
    • Suitable from 1 year onwards.
    • Recommended for daily use, with or without food. 
    • Sugar free
    • Free from artificial flavourings or colourings that may be found in other food & drinks containing live cultures.
    • Available to purchase in three pack sizes of 16, 40 or 80 capsules.
    • From the UK’s most trusted & recommended brand of friendly bacteria supplements. As determined in an independent survey of 1000 British women+

    Please note: This is a food supplement and is not intended to prevent, treat or diagnose any medical conditions.



    Customer feedback collected via independent review platform Trustpilot. See 'Reviews' tab for more customer opinions collected via our own website.

  • How to use

    Instructions for use

    Natural food supplement suitable for adults and children (from 1 year onwards) with the following recommendations:

    • Take 1 to 4 capsules depending on severity of symptoms and up to 6 capsules daily, or as professionally directed.
    • For young children the dose should be lowered.
    • If taking anti-fungals, take separately (at least 2 hours apart).
    • 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 in a cool, dry place below 25°C and out of direct sunlight.


    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.

    Pregnant or breastfeeding women should consult their doctor before taking Saccharomyces boulardii.



    Customer feedback collected via independent review platform Trustpilot. See 'Reviews' tab for more customer opinions collected via our own website.

  • Ingredients

    Ingredients saccharomyces boulardii supplement fact panel

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

    Each capsule guarantees 5 billion live cultures.

    Suitable for vegetarian and vegan diets.



    Customer feedback collected via independent review platform Trustpilot. See 'Reviews' tab for more customer opinions collected via our own website.

  • Help & advice

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  • Reviews

    Customer reviews

    • hi, I've had IBS D for more than 15yrs...i had to poop atleast 4 times in the morning everyday...i tried everything from changing my diet to starving myself just to get out of the house...i'm also lactose intolerant So...i bought S Bou,..from klaire labs last week and from the first dose itself i found relief...i take it first thing in the morning(2 tablets) along with jarrow eps probiotic(2)..finally i dont have to poop more than 2 bloating,gas,heavy feeling etc... Lucky Virginia

      Lucky - 22nd December 2020

    • This product has helped my IBS D so much. And if I have an upset tum this is what I reach for

      Shas iqbal - 8th June 2020

    • Really impressed with Saccharomyces boulardii, I find it eases an upset stomach and has really improved my gut issues. I buy the 80 capsules pack size and take 2 a day, alongside the MAX product. Great products, thanks OptiBac!

      Ben - 4th June 2020

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