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Optibac Saccharomyces Boulardii (S. Boulardii)

Pack Size : 16Pack Size : , 40Pack Size : , 80


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.

All Chemists
  • Name of shop: All Chemists
  • GPhC registraion number: 9011271
  • Address: 381 Church Lane, Kingsbury
    NW9 8JB

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Who is Optibac Saccharomyces Boulardii for?

For those wanting to take a pure Saccharomyces boulardii supplement.

Key benefits

  • Each capsule contains 5 billion live cultures of pure Saccharomyces boulardii guaranteed until end of expiry
  • Saccharomyces boulardii is an extremely well-researched, internationally acclaimed friendly yeast
  • It has been used safely around the world for over 50 years
  • Scientifically proven to pass through stomach acidity and survive to reach the gut
  • Complements your natural gut bacteria
  • Easy to take on the go – no refrigeration required
  • Suitable from 1 year onwards
  • Can be used intensively or on an ongoing basis
  • As featured in Women’s Health, and highly praised in TripAdvisor forums, Optibac first introduced Saccharomyces boulardii to the U.K.
  • From the UK’s most trusted & recommended brand of friendly bacteria supplements. As determined in an independent survey of 1000 British women+.

Available in three pack sizes of 16, 40 or 80 capsules.

Customer Questions

All questions answered by probiotic experts Dr Kate Stephens PhD (Food and Microbial Sciences) BSc(Hons) Medical Microbiology and Kerry Beeson BSc (Nut. Med.) Nutritional Therapist.

Is Saccharomyces boulardii a well-known friendly bacteria strain?

Saccharomyces boulardii is an internationally acclaimed strain; in fact, it is one of the most highly researched strains in the world! The unusual thing about it, however, is that it is actually a yeast, rather than a type of bacteria. Optibac first introduced Saccharomyces boulardii to the UK, but it has been used safely1,2  for over 50 years in countries around the world and has been used in numerous clinical trials.

How many Saccharomyces Boulardii capsules should I take a day?

As we all have a unique gut microbiome, the response to Saccharomyces boulardii is different for each individual. You can take up to a maximum of 6 capsules per day, but it is recommended to start with 1-2 capsules per day and build up from there as required. When taking a higher number of capsules (3-6 capsules) it is advised to spread these across the course of the day, though if desired you can take 3-4 capsules together initially.

What time should I take Saccharomyces Boulardii?

There is no right or wrong time of the day to take Saccharomyces Boulardii, so whenever fits in with your schedule is fine. This strain of yeast is more robust to environmental stressors than more common bacterial live cultures, and shows strong resistance to heat, humidity, and stomach acidity levels. It doesn’t need to be refrigerated and can be taken with or without food.

Can I take Saccharomyces Boulardii alongside other friendly bacteria supplements?

Yes, it is fine to take Saccharomyces Boulardii alongside your other live cultures supplements, in fact it is recommended to do so. Saccharomyces Boulardii works differently to other friendly bacteria supplements because it is a ‘friendly yeast’3 and does not colonise for long in the gut, but it works well with other live cultures supplements, so most people take it alongside.

Uses / Instructions

Recommended use

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


  • 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.
  • 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.
  • This is a food supplement and is not intended to prevent, treat or diagnose any medical conditions.
  • Probiotic supplements should not be used as a substitute for a healthy diet and 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.

Side Effects

See patient information leaflet/packaging for details.


  • Live cultures: Saccharomyces boulardii (275mg)
  • Vegetarian capsule: hydroxypropyl methylcellulose

Each capsule guarantees 5 billion live cultures.


  • Vegan
  • Vegetarian
  • No dairy
  • Gluten free
  • Soy free
  • No added sugars
  • Free from artificial flavourings, colourings and preservatives
  • No chemicals or parabens
  • GMO free

Shipping Countries: United Kingdom (UK)

Additional information

Pack Size

16, 40, 80


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NameOptibac Saccharomyces Boulardii (S. Boulardii) removeGERMOLOIDS CREAM (55g) removeParacetamol 500mg Caplets removeClove oil removeASHTON & PARSONS INFANTS POWDERS removeMulti Vitamin ONE a DAY (pack of 50) remove

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