Saccharomyces Boulardii + MOS by Jarrow Formulas – Intestinal Balance Probiotic
Saccharomyces Boulardii + MOS capsules by Jarrow Formulas combine a live probiotic yeast with a yeast-derived prebiotic in a vegetarian capsule. Unlike formulas built around multiple bacterial strains, this product pairs Saccharomyces boulardii with manno-oligosaccharides for focused digestive support.
Each capsule supplies 250 mg of the probiotic yeast, providing 5 Billion CFU, alongside 200 mg of MOS yeast fraction. These amounts describe different components: CFU expresses the viable microorganism count, while milligrams describe ingredient weight. The 90- and 180-capsule options offer the same per-capsule formula, so choosing a bottle size does not change the serving size.
Key Saccharomyces Boulardii + MOS Benefits
- Supports a balanced intestinal environment with a probiotic yeast that works within the digestive tract rather than adding a blend of bacterial species.
- Helps maintain the normal intestinal barrier, supporting the lining that separates the gut’s contents from the body’s internal environment.
- Pairs living yeast with a yeast-derived prebiotic component for complementary support of the intestinal microbial environment.
How Saccharomyces Boulardii + MOS Works
A healthy digestive tract includes both a diverse microbial community and a functioning intestinal lining. Saccharomyces boulardii tolerates the stomach’s acidic environment and acts within the intestine. Its role in intestinal microbial balance is different from permanently replacing the organisms already living there: this yeast passes through the digestive system rather than becoming a lasting resident.
The formula also addresses the environment around those organisms. Its yeast-cell-wall fraction supplies MOS, a carbohydrate component distinct from the living yeast. This combination brings together a microorganism and a prebiotic ingredient; it is not a digestive enzyme blend or a substitute for fiber-rich foods. For someone comparing probiotics, that distinction matters more than simply counting the number of strains on a bottle.
Key Functional Ingredients Include:
- Saccharomyces boulardii: Supports the intestinal microbial environment and normal intestinal lining. This live yeast remains active through passage into the gut, where interactions with intestinal cells and microbes contribute to gut barrier support. Its activity is local and temporary, rather than permanent colonization.
- MOS Yeast Fraction: Supplies manno-oligosaccharides from S. cerevisiae cell walls as the formula’s prebiotic component. These carbohydrates provide material for beneficial gut microbes rather than adding another live strain. The listed 200 mg refers to the yeast fraction, not to 200 mg of purified MOS.
Saccharomyces Boulardii + MOS Is Formulated For
- Adults seeking a yeast-based approach to everyday intestinal support.
- People comparing a focused probiotic and prebiotic combination with multi-strain bacterial formulas.
- Adults who prefer vegan capsules and a product that does not require refrigeration.
Supplements support your health but do not replace a balanced diet. Always check with your healthcare practitioner if you have doubts about a new supplement. Or you may book a FREE product consultation with Holistic Health Partners, led by Carolyn Mulally BS, RN, HN-BC. You may also wish to explore our other Probiotics Supplements, GI Health Supplements, and Jarrow Formulas Supplements and Vitamins collections.
Recommendation: Adults take 1 capsule once a day with water or as directed by your qualified healthcare professional.
Serving Size: 1 Capsule
Servings Per Container: 90-capsule bottle: 90; 180-capsule bottle: 180.
Saccharomyces boulardii (an S. cerevisiae strain) ... 250 mg † (5 Billion CFU)
MOS Yeast Fraction (Min. 35% Manno-oligosaccharides [MOS]) (S. cerevisiae) ... 200 mg †
† Daily Value (DV) not established.
Other Ingredients: Tapioca starch, capsule (hydroxypropylmethylcellulose, water), silicon dioxide and ascorbic acid (antioxidant).
Does Not Contain: No wheat, gluten, soybeans, dairy, egg, fish/shellfish, peanuts/tree nuts or sesame.
Storage: STORE IN A COOL, DRY PLACE.
KEEP OUT OF REACH OF CHILDREN.
Additional precaution: Do not use Saccharomyces boulardii if you are immunocompromised, critically ill or have a central venous catheter because of the risk of a rare bloodstream yeast infection. Discuss antifungal medication use with your pharmacist before taking a live-yeast probiotic.
Frequently Asked Questions About Saccharomyces Boulardii + MOS
What are the benefits of Saccharomyces Boulardii + MOS?
Saccharomyces Boulardii + MOS supports the intestinal microbial environment and normal gut barrier function through a yeast-based probiotic approach. Each capsule combines 250 mg of Saccharomyces boulardii, providing 5 Billion CFU, with 200 mg of MOS yeast fraction. The yeast is the living probiotic; MOS is the separate prebiotic component. This makes the formula different from a blend of several bacterial strains. It supports everyday intestinal wellness without replacing dietary fiber or a varied diet.
Who should take Saccharomyces Boulardii + MOS?
This Jarrow Formulas product is intended for adults looking for a probiotic yeast with a complementary prebiotic ingredient. The vegan capsule format can suit adults who prefer not to use animal-derived capsules, and the product does not require refrigeration. It is not an automatic choice for everyone who wants gut support: pregnancy, nursing, age under 18, medications and medical conditions require professional guidance. People who are immunocompromised, critically ill or have a central venous catheter should not use this live-yeast probiotic.
Are there any side effects of taking Saccharomyces Boulardii + MOS?
Constipation or other digestive discomfort can occur. WARNING: Consult a healthcare professional before using this product if you are pregnant, nursing, under the age of 18, are taking medication or have a medical condition (immune compromised system); if adverse reactions occur, discontinue use. KEEP OUT OF REACH OF CHILDREN. Rare bloodstream yeast infections are a concern in vulnerable people: do not use if immunocompromised, critically ill or living with a central venous catheter. Discuss antifungal medication use with your pharmacist before taking this live-yeast product.
How does Saccharomyces Boulardii + MOS support overall health?
Its contribution centers on the digestive tract, where the intestinal lining and resident microbes have different but connected roles. Saccharomyces boulardii supports that local environment as it passes through the gut, while MOS supplies the formula’s yeast-derived prebiotic component. This is targeted intestinal support, not a multivitamin, digestive enzyme or broad-spectrum fiber supplement. The label directs adults to take one capsule once daily with water unless their qualified healthcare professional directs otherwise. Both bottle sizes provide the same per-capsule amounts.
These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.
