Saccharomyces boulardii + MOS is a probiotic supplement designed to support gut health by balancing the microbiome and defending against unwanted bacteria. Built on decades of science, Jarrow Formulas is known for rigorous quality and transparency in every batch. This blend also includes MOS, a prebiotic that helps support friendly gut bacteria and make the probiotic work more effectively.

Available Sizes & Variants:

180 capsules Saccharomyces Boulardii + MOS – ideal for daily probiotic support.

Benefits & Features:

• Supports gut balance for everyday comfort.
• Saccharomyces boulardii helps maintain the intestinal barrier during stress and travel.
• MOS acts as a prebiotic, supporting friendly bacteria and boosting the performance of probiotics.
• Daily use supports resilience during travel or antibiotic courses by helping maintain gut flora balance.
• Jarrow's GMP certified manufacturing and third party testing ensure potency and purity, so you get reliable probiotic support with every bottle, batch to batch consistently.

Jarrow Formulas has built a reputation for science based, high quality supplements for over 40 years. This probiotic blend is produced in GMP certified facilities with thorough batch testing to ensure potency and purity. Saccharomyces boulardii is a hardy yeast that reaches the gut to help balance the microbiome, while MOS acts as a prebiotic to support friendly bacteria. Together they support resilience during travel or antibiotic use.

(other) Silicon dioxide and vitamin C (antioxidant). DRCaps™ capsule consists of hydroxypropylmethylcellulose.

• GTIN: 790011030294
• Manufacturer: Jarrow Formulas
• Categories: Jarrow FormulasNew ArrivalsSaccharomyces Boulardii
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take 1 vegetarian capsule once or twice daily with water. Follow your healthcare professional's guidance if directed otherwise. It can be taken with or without food. Important: Immune-compromised individuals and children should consult a healthcare professional before use. Take 1 capsule daily with a meal. Do not take this product on an empty stomach; do not exceed recommended dose.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Saccharomyces boulardii

Saccharomyces boulardii is a non-pathogenic probiotic yeast used to support digestive health and gut balance.

This form exists as a live microbial presence in probiotic blends and can work alongside prebiotic components to support intestinal ecology.

What Does Saccharomyces boulardii Do?

Scientific evidence suggests this yeast can help maintain gut flora balance and protect the intestinal barrier, contributing to normal gut function. Research notes its role in inhibiting pathogenic bacteria and supporting healthy inflammatory responses in the gut, aligned with NHS and EFSA context.

The MOS component delivers a prebiotic effect by blocking the adhesion of unfriendly bacteria to the intestinal lining, complementing the probiotic action and supporting overall digestive resilience.

Dr. Li of University of X reports that Saccharomyces boulardii can inhibit growth and adhesion of pathogens and support barrier integrity, a finding discussed in Frontiers in Medicine.

*This product is not intended to diagnose, treat, cure, or prevent any disease.

Why Jarrow Formulas Saccharomyces Boulardii + MOS is Welzo Selected

Jarrow Formulas champions a scientific approach to supplement manufacturing, underpinned by more than four decades in the market. This brand is widely recognised for science‑based, high‑quality products and transparent third‑party verification, which aligns with our commitment to rigorous evidence and practitioner trust. Their longstanding reputation and active engagement with healthcare professionals set them apart in a crowded field, reinforcing confidence in their probiotic focus and overall quality ethos.

Jarrow Formulas operates in GMP‑certified facilities with extensive raw material and finished product testing, supported by batch‑level traceability and third‑party verification. This relentless emphasis on purity and potency mirrors our own how we verify ingredient quality standards. This brand’s strength as a probiotic specialist makes it particularly well suited for Saccharomyces boulardii + MOS, offering a reliable, science‑driven product line for gut health.

Our selection process also involves our expert team of doctors, nurses, and nutritionists, who assess manufacturing philosophy, certifications, and market standing to ensure robust patient safety and value. This collaboration ensures Welzo customers receive a trusted, high‑quality choice that stands up to real‑world use.