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Insure your #2's

Pure S Boulardii

  • The ultimate insurance policy - When traveling, eating out or trying new foods, S boulardii can help protect you from occasional diarrhea †
  • Relieve the runs - If it's already too late, S boulardii can support better bowel movements †
  • A Swiss Army Knife for your gut - S boulardii can also support gut lining integrity, enzyme production, and inhibit bad bacteria growth †
  • Even works with antibiotics - Unlike other probiotics, S. Boulardii can survive in your system while taking antibiotics and help support bacteria balance †
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Designed For Sensitive Guts

Gluten Free
Hypo Allergenic
3rd Party Verified

The Ultimate Insurance For Your #2s

Here's how Pure S Boulardii has got your back...err...backside!

How It Works †

S. Boulardii is a friendly yeast. But since it acts more like good bacteria than a fungus (yes, yeast is a type of fungus), we call it a probiotic! One huge advantage of it being a yeast, is that it is naturally-resistant to all antibiotics. Making it a fantastic source of probiotics, when taking a course of bacteria-obliterating antibiotics.
Perhaps most intriguing, S Boulardii acts as both a probiotic and a prebiotic! In case you don't know, a prebiotic is a source of food for friendly bacteria. This is why when friendly gut bacteria already in your gut digest S. Boulardii, they create short-chain fatty acids. These are the metabolic byproducts ('poop') of friendly bacteria, aka postbiotics. And postbiotics are the X factor nutrients that slow the growth of harmful bacteria and contribute to gut health and overall wellness.
This beneficial yeast also supports symptoms associated with leaky gut. It does this in numerous ways. First, by acting as a safe cocoon for the protective mucus layer of your gut wall. Second, by regenerating intestinal cells. Third, by preventing the premature death of enterocytes (cells of the gut lining). And if that wasn't enough, it also helps reduce the production of inflammatory chemicals that exacerbate leaky gut.
Of course, S Boulardii is probably most famously known for how it helps alleviate occasional diarrhea. Key to this function is the way it targets pathogens in the gut and prevents harmful microbes from making contact with cells of the digestive tract.

How It Helps †

Protector against & reliever off 'the runs' - If you take it ahead of time, you improve your chances of avoiding diarrhea. And if you take it a little too late (while you're stuck to the porcelain throne), it can help stop things dead in their tracks. It performs this magical trick by eliminating the bacterial toxins that cause certain diarrhea, such as traveller’s diarrhea or antibiotic-associated diarrhea.
Guardian angel of your gut - S Boulardii's usefulness doesn't end at diarrhea. It can also help people with leaky gut, by acting like a personal trainer / security guard for the cells lining your intestinal wall. In addition, it helps repopulate the good bacteria in your gut.
Supports digestion - S. Boulardii enhances the release of digestive enzymes in the cells that line the intestinal tract. It’s not necessarily a substitute for specialized digestive enzymes, but it’s nice to know that just one capsule acts like a probiotic and digestive enzyme in one.
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Why We Love This Product

Dr. Joe Haines MD
Medical Doctor
Pure S Boulardii is made with a minimum of 5 billion CFUs of good bacteria per capsule. And most importantly, it is shelf stable, meaning you don't need to keep it hidden away in your fridge.
Pure S Boulardii is made with a minimum of 5 billion CFUs of good bacteria per capsule. And most importantly, it is shelf stable, meaning you don't need to keep it hidden away in your fridge.
Bailey Franzen RDN
Registered Dietician
Pure S Boulardii meets the highest purity standards across the board. Not only is it independently 3rd party verified gluten, dairy and soy free, but it is also free of GMOs, nuts, fish, shellfish, eggs, starch, yeast, artificial colors and flavors.
Richelle Godwin RDN
Registered Dietician
This S Boulardii formulation uses the highly studied DBV PG 6763 strain of Saccharomyces Boulardii, which is well known by its research for supporting gut health.

How To Use
Pure S Boulardii

How To Take

Suggested Use: Take 1 capsule daily, with or between meals, or as directed by a healthcare professional.

Caution: Pregnant or nursing women, children under 18 years of age, and individuals with a medical condition and/or taking medications, should consult a physician before using this or any dietary supplement. Keep out of reach of children. Do not use if safety seal is damaged or missing. Do not eat freshness packet enclosed. Store in a cool, dry place.
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Frequently Asked Questions

Product Formula
How To Use
Allergen Free Info
Who It Is For
What does Saccharomyces Boulardii actually do?
S. Boulardii is a probiotic yeast discovered in 1920 by Henri Boulard. Mr Boulard observed in Southeast Asia that people drinking tea made from the skins of lychee fruit didn’t experience as many gastrointestinal issues. This beneficial yeast acts like food for your friendly gut bacteria that may have been hit by diarrhea, antibiotic usage, or a combination of both (hello antibiotic-associated diarrhea). By acting as food, S. Boulardii encourages the repopulation of the gut microbiome with friendly bacteria. It also helps fight off harmful pathogens from attacking the cells of the intestinal lining. What a beautiful little yeast! †
How does S boulardii help?
S. Boulardii is a live beneficial yeast that encourages a healthier environment in the gut microbiome. It binds to pathogens; protects the mucosal barrier; prevents or hinders harmful bacterial toxins from being released; regenerates intestinal cells; supports normal inflammatory reactions; and stimulates the release of digestive enzymes. By doing all this and more, this friendly yeast supports gut health, eases occasional diarrhea and other symptoms associated with a leaky gut. †
What's the difference between Saccharomyces Boulardii and Saccharomyces Cerevisiae?
Our gut-health superhero yeast, S. Boulardii is actually a subspecies of S. Cerevisiae. You've probably heard of S. Cerevisiae's also known as brewer’s yeast and is commonly used in the fermentation process for bread (hello sourdough), as well as beer and wine. So you can think of S. boulardii as a tribe within the nation of S. cerevisiae. And let's be clear here: S. boulardii is superior for gut health to S. cerevisiae, because it can survive the highly-acidic environment of the gut and stays in the body for longer, giving ample time for friendly bacteria in the colon to consume it and create postbiotic short-chain fatty acids that are the key to supporting gut health. Plus, S. boulardii won’t bloat your gut like baker’s yeast may do. Another fun fact: In 2019, researchers discovered that S. boulardii produces acetic acid, which is the main component of vinegar that hinders potentially-harmful microorganisms. S. cerevisiae, meanwhile, is not known to produce acetic acid. †
How do I know if I should take this supplement?
If you have occasional diarrhea caused by a bug you picked up travelling to another country or domestically from food poisoning - or simply trying something new - you may benefit from it. Any occasional gastrointestinal symptom may also be relieved with continued use. Keep in mind S. boulardii does not remain in the gut after supplementation is discontinued. So take it regularly to prevent symptoms from developing or while symptoms are present. You may also take this probiotic yeast everyday to support a healthy gut microbiome for overall wellness. †
When should I take Pure S Boulardii?
S Boulardii is flexible. Meaning you can take it anytime. Take it with meals or without. But if you take it with Smart Probiotic and you don’t want to have to remember when to take two different probiotics, take both of them ideally 30 minutes before a meal or at the start of a meal.
How should I take it?
Your choice: swallow the capsule with water or open the capsule and mix in food! (Unlike some other probiotic products, it is okay to take S Boulardii out of the capsule, as the hardy strain can survive the acidic journey through your stomach)
How much should I take?
Take one capsule 1-2 times daily. Studies suggest that a dose of 5-10 billion colony forming units (CFUs) are helpful for a variety of issues. Each capsule supplies 5 billion CFUs. With all of that said, if you're experiencing diarrhea, you can up your dose to 4 capsules a day while your fighting the porcelain throne!
How many servings / days supply?
Each bottle supplies 60 capsules. One capsule a day provides a two-month supply. Easy peasy math.
How should I store this?
No refrigeration is necessary. For best results, store in your pantry and keep it company right next to your other Essential Stacks digestive health supplements.
How long till I feel a noticeable difference?
Many supplements can take a long time to notice the effects. But that wouldn’t do you any good if you have diarrhea. The good news is that research supports this probiotic yeast and that it can offer quick benefits for occasional diarrhea and other digestive concerns. But there is no conclusive data that says exactly how quickly it will work. Feel the difference for yourself and if you experience no benefits, we will refund your money within 60 days of your purchase.
Does it contain gluten, dairy or soy?
No. Plus, it is 3rd party verified gluten, dairy and soy free.
Can I take Pure S Boulardii with other Essential Stacks products?
Yes, it especially pairs well with our prebiotic supplement, Friendly Prebiotics, as well as our broad spectrum probiotic blend, Smart Probiotic.
Can children take Pure S Boulardii?
We like to err on the safe side when it comes to children. So please consult with your child’s healthcare provider to determine if S Boulardii is okay for them and what the appropriate dose would be.
Can pregnant or nursing mothers take Pure S Boulardii?
We recommend you consult your physician before using this or any dietary supplement.
Are any medical issues contraindicated?
If you have any medical issues, please consult your physician before using this or any dietary supplement.
Can I take it with my medications?
If you are taking any medications, please consult your physician before using this or any dietary supplement. In particular, if you’re taking an anti-fungal medication, keep in mind that it may reduce the effectiveness of this S Boulardii probiotic (since S Boulardii is a yeast, which is a type of fungus). If this is the case you can try taking the medication and probiotic at different times of the day just like an antibiotic and probiotic.

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