Saccharomyces Boulardii

40 capsules |up to 40 days' supply

Dr Sasivimol Ahmed PhD, PG Dip (Personalised Nutrition), BSc (Food Science)
Recommended often, Saccharomyces boulardii is a friendly yeast and has been used safely around the world for over 50 years.
Dr Sasivimol Ahmed
Dr Sasivimol Ahmed PhD, PG Dip (Personalised Nutrition), BSc (Food Science)

Who is it for?

With 5 billion live cultures per capsule, this is for anyone looking to purchase a pure Saccharomyces boulardii supplement an extensively researched, unique friendly yeast proven to reach the gut alive.

Purchase type

FREE UK delivery on orders over £10.

UK express - Monday to Friday delivery.

See our Delivery & Returns for more information.

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  • Vegan

    Vegan

  • No dairy

    No dairy

  • Gluten free

    Gluten free

  • Soy free

    Soy free

  • No added sugar

    No added sugar

  • Artificial colour free

    Artificial colour free

Key benefits

A pure Saccharomyces boulardii supplement

  • Renowned friendly yeast Saccharomyces boulardii Over 50 years of research in thousands of adults and children, Saccharomyces boulardii live cultures are extremely well-researched 
  • Scientifically proven digestive supplement Shown to reach the gut alive and complement the body's natural gut bacteria
  • A fast-acting supplement Can be taken intensively or ongoing, safe for long-term use
  • Easy to take on the go No need for refrigeration, making this supplement suitable to take with you wherever you go
  • Suitable for those with coeliac disease Gluten free and vegan supplement
  • Optibac first introduced S.boulardii to the UK Optibac was the first brand to introduce S. boulardii to the UK, we've been selling it for more than 16 years
  • S. boulardii features in the WGO guidelines on biotics The 2023 World Gastroenterology Organisation report backs the use of Saccharomyces boulardii 
  • From the UK's most recommended brand Optibac is the brand of friendly bacteria supplements most recommended by UK consumers

 

Optibac Probiotics strains

  • Saccharomyces boulardii
See full ingredients list
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Complements gut bacteria

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General digestive

Customer Reviews

Customer reviews have been collected on our website or independently through Trustpilot where no moderation is possible. Reviews are not endorsed by us and should not be regarded as medical or health advice. The top 3 reviews have been hand selected as our recent favourites, please click 'View all product reviews' below to explore more reasons why customers love this product.

Help & advice

Our team of qualified experts are available for free personalised supplement advice. If you're not sure where to start or your needs have recently changed, please get in touch.

Louise Mason
Louise Mason BA(Hons) DipCNM Nutritional Therapist, DipCNM Naturopath, mANP
optibac

Why choose us?

We are the UK's most trusted & recommended brand of friendly bacteria supplements as determined in an independent survey of 1000 people 

We use the most researched strains of friendly bacteria in the world with each supplement designed to target individual needs and life stages.

  • How to use

  • Ingredients

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  • Delivery & returns

  • How to use

    Recommended use

    Natural food supplement suitable for adults and children (from 1 year onwards)

     

    Saccharomyces Boulardii has the following recommendations:

    • Take 1 capsule daily. May be increased up to 6 capsules daily as desired (depending on severity of symptoms) or as professionally directed.
    • For young children the use should be lowered. 1 capsule daily, may be increased up to 3 capsules daily.
    • If taking anti-fungals, take separately (at least 2 hours apart).
    • For those unable to swallow capsules, open and mix contents with a cool drink/food..

    Storage instructions

    • For best results, do not remove desiccant sachet from the glass jar and close lid firmly after each use.
    • Store in a cool, dry place below 25°C and out of direct sunlight.

    Safety

    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, short bowel syndrome, or patients with open wounds following major surgery; unless under a doctor's care. Keep out of reach of children.

    Gut health supplements are not intended to prevent, treat or diagnose any medical conditions. If taking probiotic supplements for gut health, note that these should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. If you are taking any medications or have a serious medical condition, consult a doctor before use. Optibac supplements will not cause dependency and may be used on an ongoing basis.

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

    The use of Saccharomyces boulardii has been backed by the 2023 World Gastroenterology Organisation Global guidelines and the European Society of Pediatric, Gastroenterology, Hepatology and Nutrition report.

  • Ingredients

    Live Cultures

    • Saccharomyces boulardii

    Ingredients

    Live cultures: Saccharomyces boulardii (275mg); vegetarian capsule: hydroxypropyl methylcellulose

    Each capsule guarantees 5 billion live cultures.

    Suitability

    • Vegan
    • Vegetarian
    • No dairy
    • Gluten free
    • Soy free
    • No added sugars
    • Free from artificial flavourings, colourings and preservatives
    • No chemicals or parabens
    • GMO free
    Format Capsule
    No. Live Cultures 5 billion
    Recommended Use 1 capsule daily
    Age Range Adult
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  • Delivery & returns

    UK Delivery

    Free UK Delivery over £10 
    Free standard UK delivery is automatically applied at the checkout when you spend £10.

    Standard 2nd class: £2.50
    Allow 4-10 working days (Monday - Friday) for delivery 

    1st class: £3.95
    Allow 1-3 working days (Monday - Friday) for delivery 

    Express Next Day, order before 2pm (Tracked): £6.95 
    Allow 1-2 working day delivery to most of the UK*. Orders placed on Friday will be delivered on Monday (next working day). Requires signature.

    Shipments will be dispatched via DHL or FedEx, the service will be selected depending on the delivery location.

    *Express delivery may exclude the Channel Islands, Herm Island, Isle of Man, Isle of Wight, Northern Irish postcodes BT18 & upwards, Sark, Scottish borders and offshore and a small number of remote mainland destinations as determined by our delivery courier. 

    Good to know

    • We'll send you an email to confirm once your parcel has been dispatched.
    • For delivery queries, please call us on +44 (0)1264 339 770 or email enquiries@optibacprobiotics.com
    • Orders placed before 2pm are typically dispatched on the same working day.
    • Delivery within the UK and Northern Ireland has a fixed price, regardless of the size and weight of your order. 
    • Delivery times are estimates and not guaranteed unless otherwise stated.

    International Delivery

    We offer an excellent worldwide delivery service. For more details, please take a look at our delivery FAQ.

    Returns

    If you have changed your mind, you can return goods, at your cost, unopened within 14 days for refund or exchange, this does not affect your statutory rights.

Customer Questions

All questions answered by probiotic experts Dr Kate Steed PhD (Food and Microbial Sciences) BSc(Hons) Medical Biology and Helen Morton BSc (Hons) DipION Nutritional Therapist

Yes! In fact, it’s highly recommended. S. boulardii does not colonise for long in the gut but it harmonises extremely well with all types of friendly bacteria, so most people take them in combination.

Research shows that the friendly yeast Saccharomyces Boulardii is suitable to take alongside antibiotic medication1. This has also been mentioned in a ZOE podcast. 

Our gut microbiomes are unique, so the response to Saccharomyces boulardii varies. If taking Optibac S. Boulardii supplement, each capsule contains 5 billion live cultures. Try 1-2 capsules initially (or a stronger 3-4 capsules together if desired) and increase if necessary up to a maximum of 6 capsules (30 billion live cultures) spread over the day. Within these guidelines, then take as much or as little as you need, on an occasional or ongoing basis.

Saccharomyces boulardii is one of the most highly researched strains in the world! But it’s actually a friendly yeast, not a type of bacteria. This internationally acclaimed strain has been used safely1,2 for over 50 years around the world, but it was Optibac that first introduced a Saccharomyces boulardii supplement to the UK.

Read references

It’s easy to take S. boulardii live cultures – they can be taken at any time of day, with or without food! This friendly yeast is more robust than most bacteria1, and can resist high heat, humidity, and stomach acid levels. It doesn’t need refrigeration, so you can take it with you, wherever you go!

Read references

As a friendly yeast, Saccharomyces boulardii is hardier than most good bacteria. It survives well in very hot or humid conditions1, doesn’t require refrigeration and can be taken with or without food. It’s the perfect ‘friend’ to take on your worldwide travels!  

Read references

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