SaccharoMyTum – Saccharomyces Boulardii Yeast Biotic

Saccharomyces boulardii is not a bacterial probiotic. It's a beneficial yeast. This distinction matters enormously: antibiotics kill bacteria — both the harmful pathogens you're treating and the beneficial bacteria in your gut. They do not kill yeast. S. boulardii survives a full course of antibiotics intact, continues working in your gut throughout treatment, and is the only probiotic with direct clinical evidence for preventing antibiotic-associated diarrhoea. SaccharoMyTum delivers 5 billion CFU of S. boulardii alongside vitamin D3 for immune support — halal certified, vegan, and made in the UK.

Why S. Boulardii Is a Different Category of Probiotic

The mechanism of S. boulardii is distinct from bacterial probiotics. It works primarily by producing proteases that degrade toxins produced by pathogenic bacteria, by stimulating secretory IgA production in the gut, and by competing directly with harmful organisms for binding sites on the intestinal wall. It does this whether you're taking antibiotics or not — but the antibiotic-safe property makes it uniquely valuable during and after antibiotic courses.

A systematic review in the Cochrane Database of Systematic Reviews confirmed S. boulardii significantly reduces the risk of antibiotic-associated diarrhoea — one of the most replicated findings in probiotic research. It is the go-to recommendation for travellers' diarrhoea, C. difficile prevention during antibiotic treatment, and IBS with diarrhoea predominance.

Why Competitors Fall Short

Optibac Saccharomyces Boulardii — good quality, not halal. Optibac produces one of the best S. boulardii products in the UK with transparent CFU data and good quality control. But uses gelatine capsules and is not halal certified. SaccharoMyTum is halal and kosher certified with HPMC plant capsules throughout.

Florastor — standard 5 billion CFU, no vitamin D, not halal. Florastor is the global reference S. boulardii brand used in clinical trials. Clinical-grade product but no halal certification, no vitamin D complement, and significantly more expensive than SaccharoMyTum.

Bacterial probiotics during antibiotic courses — wrong category entirely. Taking bacterial probiotics (Lactobacillus, Bifidobacterium) during antibiotic treatment is largely counterproductive — the antibiotics kill the probiotic bacteria. S. boulardii yeast is unaffected by antibiotics and is the correct intervention during antibiotic treatment.

What's in Every Capsule

• Saccharomyces boulardii — 5 billion CFU · beneficial yeast probiotic · antibiotic-resistant · specifically indicated for travellers' diarrhoea, antibiotic-associated diarrhoea, and IBS-D
• Vitamin D3 · contributes to normal function of the immune system (EU authorised) · supports the immune-modulating context in which gut health operates
• Biotin · supports normal psychological function (EU authorised) · involved in gut lining integrity

30 capsules — 30-day supply. Vegan HPMC capsules. Halal approved. Kosher. Dairy-free.

Every capsule is:  ✓ Halal certified  ·  ✓ Kosher  ·  ✓ Vegan  ·  ✓ Dairy-free  ·  ✓ Gluten-free  ·  ✓ Antibiotic-safe  ·  ✓ UK GMP made

SaccharoMyTum vs the Competition

Based on publicly available product information. Prices approximate. Always verify current specs on manufacturer websites.

How to Take It

Take 1 capsule daily with food and water. During antibiotic courses: take at a different time of day from the antibiotic (minimum 2 hours apart) to maximise S. boulardii survival, even though the yeast is broadly antibiotic-resistant. For travel: start 2–3 days before departure and continue throughout travel. For IBS-D or post-antibiotic restoration: consistent daily use over 4–8 weeks.

After completing an antibiotic course, follow with BioTic 4 Billion to restore bacterial microbiome diversity — SaccharoMyTum maintains gut defence during treatment, BioTic rebuilds the bacterial population afterwards. For gut motility support alongside the yeast probiotic, MagneBowel provides magnesium-based bowel regularity support.

Is This You?

• You're currently on antibiotics and want probiotic support that actually survives the course
• You're about to travel internationally and want the clinically validated yeast probiotic for travellers' diarrhoea prevention
• You have IBS with diarrhoea-predominance and want a probiotic with specific clinical evidence for this pattern
• You need a halal certified S. boulardii supplement — Optibac and Florastor both use gelatine
• You've recently finished antibiotics and want targeted gut restoration

Explore the full Gut Health UK and Halal Vitamins UK collections.

Questions We Get Asked

Food supplements should not replace a varied diet or healthy lifestyle. Consult your GP before use if immunocompromised, pregnant, breastfeeding, or managing a diagnosed health condition.