Saccharomyces boulardii -
The Special Forces Probiotic

Saccharomyces boulardii is a true probiotic yeast superstar, the special forces probiotic of the probiotic world. It has potent beneficial effects on your body, as listed below, without the risks associated with some other probiotics. It's not a yeast to be afraid of, unless you're allergic to yeast, of course. Precautions have to be taken if you have any type of catheter, port or IV, or are immune-compromised, but if that situation applies to you, then please check with your doctor before using any probiotics.

This probiotic yeast used to be known as a separate species from Saccharomyces cerevisiae, but researchers now say that boulardii is very similar to cerevisiae, so it is a strain of cerevisiae. That would make the technical name for it Saccharomyces cerevisiae strain (or “variant” as it is sometimes called) boulardii. But since you will see S. boulardii on product labels, that’s what I use here.

S. boulardii is similar to S. cerevisiae in that both lack the ability to penetrate into tissues like Candida species can, so they are not invasive (so not scary like the fungi listed on the Saccharomyces page). S. boulardii is unable to form spores, so the chances of translocation to other parts of the body are reduced, too.

However, since it's a yeast, anti-fungal medications can wipe out this probiotic yeast.

The Benefits of Saccharomyces boulardii

One of the biggest advantages to using S. boulardii, especially when taking antibiotics, is that it is not affected by antibiotics since it is a yeast. Therefore, it can help to keep pathogenic (disease-causing) microbes and yeasts such as Candida from overwhelming your body when the antibiotics kill most of the good bacteria and most, but not all, of the bad bacteria in your GI tract.

There are 5 other main areas where S. boulardii may show benefits based on research:

  1. Immunity
  2. Diarrhea
  3. Infections
  4. General Intestinal Health
  5. Digestion and Nutrient Absorption

In addition to these 5 main areas, there are many specific conditions which S. boulardii can benefit which are explained in my ebook.

My ebook, "Saccharomyces boulardii - The Special Forces Probiotic," currently available on and soon to be available here and in other online bookstores, explains how S. boulardii is the military special forces microbe in the probiotics world.

Saccharomyces boulardii has many different ways of combatting the enemy and restoring order, as well as the capabilities to do things which other probiotics cannot. Although other yeasts may have beneficial functions, it is currently the only one recognized worldwide as a probiotic for its multiple, beneficial actions.

Saccharomyces boulardii is not your everyday yeast and this book will show you what makes it so special and how it can help you, with insights into summaries and details from over 115 published studies.

Saccharomyces-boulardii - The Special Forces Probiotic

What Are the Side Effects of Saccharomyces boulardii?

Side effects of thirst and constipation are rare and insignificant in healthy individuals and last only a few days. Diarrhea may occur as the population of your flora changes.

Where to Get S. boulardii in Modern Times


For an S. boulardii supplement which does not have a lot of unnecessary ingredients in it, Designs for Health's Floramyces is dairy-free, lactose-free, non-GMO, is not made with gluten and does not have to be refrigerated. You can find that in my dispensary.

Here is where you can find other S. boulardii products.

For suggestions on how to start taking it, go here.

To go back to the general page about Saccharomyces, see this page.

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Disclaimer: Please note: By law, I cannot provide any personalized recommendations for your specific health concern on this site. The information contained in this site is educational in nature and is not intended as diagnosis, treatment, prescription or cure for any physical or mental disease, nor is it intended as a substitute for regular medical care. Consult with your doctor regarding any health or medical concerns you may have.

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