This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

Use coupon code WELCOME15 for 15% OFF your first order.

Cart 0

Congratulations! Your order qualifies for free shipping You are $100.00 USD away from free shipping.
No more products available for purchase

Products
Add order notes
Subtotal Free
Shipping, taxes, and discount codes are calculated at checkout
Saccharomyces Boulardii - 60 Caps Modern Endocrine
Saccharomyces Boulardii - 60 Caps Modern Endocrine

Saccharomyces Boulardii - 60 Caps

$40.00

Safe & Tested Ingredients

Dr. Formulated

Optimized For You

logo of 405
logo of ABIM

Clinical Applications

  • Balances Gastrointestinal Flora
  • Boosts Immune Function
  • Supports Gastrointestinal Barrier Function and Integrity

Saccharomyces boulardii is a health-promoting, probiotic yeast. It was first identified in the 1920s by French microbiologist Henri Boulard. Since its discovery, there have been 250 peer-reviewed articles examining S. boulardii, making this one of the most studied probiotics available. S. boulardii is a non-pathogenic yeast and is distinctly different from Saccharomyces cerevisiae, or "brewer’s yeast." S. boulardii has been shown to support gastrointestinal health by boosting secretory IgA (sIgA) levels. sIgA is an immunoglobulin (protective antibody) that is found in the digestive tract and in mucosal secretions throughout the body. Maintaining healthy sIgA levels is crucial for supporting immune health, particularly in the GI system where there can be significant exposure to unwanted agents.

sIgA acts as the first line of defense against foreign substances in the gut by attaching and neutralizing proteins that are unrecognized by the body. Depleted levels of sIgA are often found in people with low immune response, food intolerance and dysbiosis. Dysbiosis occurs when normally dominant probiotic organisms are outnumbered by commonly out-competed species. In addition to boosting sIgA levels, S. boulardii promotes gastrointestinal health by competing for space and nutrients against unwanted organisms.

To be an effective probiotic, microorganisms must have certain qualities to withstand the natural defense factors of the host. This includes resistance to gastrointestinal transit and the ability to thrive at human core temperatures. This formulation of Saccharomyces boulardii is a stomach acid-resistant probiotic, proven to survive high temperatures and transit into the intestines. The formula is freeze-dried, lactose-free and strain-verified through genetic typing to ensure maximum efficacy.


Healthy Intestinal Barrier Function

Healthy intestinal barrier function is a key factor in maintaining health. Within the GI tract, tightly packed intestinal cells act as a protective barrier preventing substances such as allergenic compounds, undigested food and toxins from leaking directly into the bloodstream. These represent the major barrier found within the pathway between intestinal epithelial cells. S. boulardii has been shown to improve tight junction structure ensuring that foods and nutrients from the diet are properly absorbed, while blocking the entrance of potentially harmful substances.


Blocking Unwanted Microbes

The intestinal ecosystem is in a state of equilibrium when healthy species of bacteria, or probiotics, are abundant and unwanted microbial species are kept under control. Factors that can upset the balance of a healthy intestinal ecosystem include certain medications, diets high in refined and processed foods, as well as stress and lifestyle factors. S. boulardii has been shown to promote healthy microbial balance by competing against harmful bacteria. Probiotics like S. boulardii can bind and eliminate unwanted organisms during normal probiotic transit and attracts unwanted organisms to the mannose component of its cell wall.


Healthy Immune Balance

In addition to supporting sIgA levels and intestinal barrier function, S. boulardii boosts immune response by supporting healthy white blood cell activity. The researchers of this study concluded that S. boulardii supports a healthy immune response and protects GI barrier function by maintaining a healthy inflammatory cycle in the GI tract.


1 capsule two times per day or as recommended by your health care professional.

[{"variant_id":"45330381078628" , "metafield_value":""}]

Saccharomyces Boulardii - 60 Caps

$40.00 USD

Clinical Grade Products

Formulated using clinically studied ingredients and produced under strict quality standards. Each of our products undergoes thorough review to guarantee safety, purity, and potency.

Cassie Smith, MD Approved

Cassie Smith, MD is dual board-certified in endocrinology, diabetes, metabolism, and internal medicine. She’s a certified health care professional who understands the power of high quality vitamin and supplement formulas. She has approved every selected ingredient to support your long term wellness.

Why Our Supplements Work

Expert-Selected

Expertly Curated

Every product is hand-selected by Dr. Cassie Smith and our team of medical professionals, rooted in science, not trends.

Compassionate Service

Compassionate Care

We prioritize your comfort, well-being, and long-term success with supplements designed to support real healing, not just symptom relief.

Holistic Approach

Whole-Body Wellness

We take a functional, holistic approach—pairing high-quality supplements with lifestyle guidance, nutrition support, and stress management.

Frequently Asked Questions

How should I store my supplements?

Most supplements should be kept in a cool, dry place away from direct sunlight. 

Are your supplements third-party tested?

Our manufacturer maintains a legacy of good manufacturing practices, instated long before cGMPs became compliance requirements. They stay up-to-date on industry research and testing methods,  and fine-tune their manufacturing  practices accordingly. They own and operate a cGMP, FDA-audited manufacturing and distribution facility here in the United States. The facility is equipped with high-performance HVAC and desiccant control that maintains ideal manufacturing conditions. Their staff are highly trained personnel who share a passion for efficacy. Because they control the entire production process—from formulation, raw material sourcing, and manufacturing, to laboratory testing of incoming materials and finished products, to bottling and labeling—they are free to be perfectionists. Their manufacturing facility is strictly controlled by rigorous standards that  meet cGMPs, and it routinely passes FDA and third-party audits. Extensive testing  on every lot they manufacture means you can trust the consistent purity, strength, identity and composition of each and every product formula.

Do you ship internationally?

Currently we only ship inside the United States.

What is your return policy? 

We accept returns on unopened products within 30 days of purchase. Please see our full return policy here

When are orders shipped?

Orders are typically shipping out the next business day.  Weather events or holidays can affect processing time. Customers will receive an email with tracking upon their order processing.

Still need help? 

Please visit or contact page here

Boost Your Health With