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.
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.
Instructions For Use
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 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.
Frequently Asked Questions
For more information, please visit our FAQ summary page.
Free over £100. Discount automatically applied at checkout when you spend £100.
Standard: £1.75 - please allow 4-7 days for delivery
First Class: £2.50 - please allow 1-3 days for delivery
Delivery within the United Kingdom 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.
Next Day UK Delivery *
Order before 3pm from Monday – Friday and select option ‘next day delivery’ at the checkout. Signature required.
* Excludes: Channel Islands, Isle of Man, Isle of Wight, Northern Irish postcodes BT18 & upwards, Scottish borders and offshore, and a small number of remote mainland destinations as determined by our delivery courier.
Once your parcel has been collected from our warehouse, we will send you a confirmation email
to let you know that the parcel has been dispatched.
For any further delivery queries, please call us on 01264 363 193 or email [email protected].
Orders placed before 3pm will be dispatched on the same working day.
Orders placed after this time will be dispatched the following working day.
We deliver to more than 50 countries and offer free delivery on orders over £100.
For more details, please check out our shipping & delivery FAQ.
We are a UK-based company and product prices on our website are shown in
pounds sterling (GBP £).
If you are purchasing from abroad, conversion to your local currency will be made by your bank on the day of purchase.
We recommend using an online currency conversion tool if you'd like an estimate, though do bear in mind that the rates displayed may be subject to change before your bank processes your transaction.
Want to make sure to never run out of your favourite daily supplement, or want to give a special gift?
Then our easy subscription service is just for you! Simply schedule a repeat order and let us take care of everything else. The service is free, secure, and you can cancel at any time.
How do I set up a subscription?
You need to be a registered account holder in order to set up subscriptions. The set-up process varies slightly depending on whether you already have an account or still need to sign up for one. Please see how to guides below.
Already got an OptiBac account?
1. Log into account
Go to "My Account" and log in.
2a. Add new subscription
Add only supplements you want to receive as part of your subscription to your basket and place an order using a debit or credit card. Don't forget to select 'Save card details'! Confirm subscription details on order confirmation page and click "Subscribe".
2b. Subscribe to existing order
Go to 'My Orders', locate the order you want to subscribe to and click "Subscribe". Select frequency, start date and payment card and click "Create".
Not yet registered for an OptiBac account?
1. Place order
Add only supplements you want to receive as part of your subscription to your basket and place an order using a debit or credit card. Don't forget to select 'Save card details'!
Create account by adding a password on the order confirmation page.
Go to 'My Orders' and click "Subscribe". Select frequency, start date and payment card and click "Create".
1. Receive your order
Based on your preferences, we'll automatically place a new order and take payment for it. You'll receive an e-mail when the order has been placed and also when your parcel has been dispatched.
2. Cancel or amend order
You can cancel or change the frequency of your subscription at any time. Simply go to My Account > Order Subscriptions.
Customer Reviews – 78 Reviews
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Here is what our customers have to say about OptiBac 'Saccharomyces boulardii':