Where to Find Saccharomyces boulardii, the Probiotic Yeast

The Saccharomyces boulardii page showed that this yeast is a probiotic superstar. This probiotic yeast was originally found on the outer skins of the tropical fruits, lychee and mangosteen back in 1920.

If you don't have access to fresh mangosteen or lychee fruits but would like to try this probiotic yeast, here are some resources for you.

The patent for the lyophilized (like freeze-dried) form is held by Biocodex. In retail stores, it is sold in capsules or packets as Florastor® and FlorastorKids®. For more information about Florastor and FlorastorKids, see my web page here.

Since Biocodex owns the patent for the freeze-dried form of this yeast, unless a product specifically says "Saccharomyces boulardii lyo", it is probably heat-dried.

Luckily, there IS an S. boulardii supplement which does not have a lot of unnecessary ingredients in it like the Florastor products and that is Designs for Health's Floramyces. It is dairy-free, lactose-free, non-GMO and is not made with gluten. You can find that in my dispensary.


Another S. boulardii supplement that is shelf-stable and only contains a vegetarian capsule and l-leucine is Smidge Yeastbiotic. Smidge is the new name of the former Corganic, Inc. that provided GutPro (now Smidge Sensitive Probiotic).

This product is free from milk/casein, wheat/gluten, eggs, fish, shellfish, tree nuts, corn, peanuts, and soybeans.

Heat-dried forms may not be stable at room temperature and should be refrigerated, as shown in the instructions for: Nutricology's supplement.

S. boulardii may also be found in kombucha drinks such as Synergy (although you don't always know how much you're getting), and in other supplements.

If you would like some suggestions about how to start taking S. boulardii, visit this page.

This will take you to the page on Saccharomyces.

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