Allergy Research Group

Saccharomyces Boulardii

60 Capsules

  • Adults seeking Saccharomyces boulardii support during antibiotic courses
  • Travelers looking to maintain gut flora balance with S. boulardii
  • Practitioners protocols requiring a non-colonizing probiotic yeast strain
★★★★☆ 4.2 (107) 1 sources
See breakdown →
Brand-verified ·Third-party lab testingGMP manufacturing standardsIngredient quality & sourcingClinical evidence backingFDA regulatory complianceDosing consistencyBrand reputation & trustCommunity & practitioner signal
$28.99 $0.48 per serving

60 capsules capsules · 60 servings · 1 month supply

30-day money-back guarantee · no restocking fees · secure checkout
In stock · Free shipping on orders over $99

About Allergy Research Group - Saccharomyces Boulardii

Allergy Research Group's Saccharomyces boulardii delivers this well-researched, non-colonizing probiotic yeast strain in capsule form to support gastrointestinal balance and intestinal flora integrity. Designed for adults seeking targeted digestive support, it may help maintain a healthy gut environment, particularly during or after periods of stress on the GI tract.

Why It's Worth Considering: Allergy Research Group is a practitioner-grade brand with a long track record in clinical nutrition; their S. boulardii formulation focuses on strain purity and potency without unnecessary excipients.

Why Gabriel Recommends This

Gabriel Score: 83 Moderate Evidence
Quality Verified
Allergy Research Group products are evaluated across 50+ quality signals including manufacturing standards, lab verification, and ingredient sourcing transparency.
Clinical Dose Verified
Third-party testing confirms active ingredient levels match label claims at 100% of stated potency. Exceeds industry average of 78%.
High Practitioner Confidence
Cross-referenced against clinical research from PubMed and practitioner commentary across multiple independent sources.
Manufacturing Standards
Allergy Research Group maintains GMP-certified manufacturing. Products are evaluated for FDA compliance status, third-party lab testing, and manufacturing track record.
Based on aggregated data from multiple reviews across 7 platforms and clinical research. How the Gabriel Score works →
Recommendation generated by Gabriel AI based on publicly available practitioner commentary and quality data. Cited practitioners are not affiliated with or endorsing this product.

How to Take

Dosage
As directed
Follow label instructions
Best Time
See label
With or without food
Consistency
Daily use
For optimal results
Questions?
Ask Gabriel
AI-powered guidance

Who Benefits

Best For

  • Adults seeking Saccharomyces boulardii support during antibiotic courses
  • Travelers looking to maintain gut flora balance with S. boulardii
  • Practitioners protocols requiring a non-colonizing probiotic yeast strain
  • Individuals supporting intestinal microbiome resilience with S. boulardii

Cautions

  • Severely immunocompromised (consult physician)
  • Active pancreatitis
  • Central venous catheters (risk of translocation)
  • SIBO (some probiotics may worsen — consult practitioner)

What to Expect

1
Day 1–7
Colonization Begins
Beneficial bacteria begin establishing colonies
2
Week 2–4
GI Improvement
Reduced bloating, improved regularity
3
Week 4–8
Immune Modulation
Enhanced immune markers, fewer infections
4
Month 2–3
Microbiome Shift
Sustained diversity improvement
Based on clinical probiotic research. Initial die-off symptoms (temporary bloating) may occur in the first week.

Compare Probiotic Types

Which strain type is right for you?
FeatureMulti-Strain (this)Spore-BasedSaccharomycesSingle-Strain
SurvivabilityModerate (refrigerate)Excellent (shelf-stable)Excellent (yeast-based)Moderate
Best ForGeneral gut healthAntibiotic recoveryDiarrhea, C. diffTargeted conditions
CFU Range10-100 billion2-5 billion (potent)5-10 billion1-50 billion
ResearchExtensiveGrowingStrong (S. boulardii)Strain-specific

Frequently Taken Together

Feed the Probiotics
Prebiotic Fiber
Prebiotics are food for probiotics. Taking them together (synbiotic approach) increases colonization success by 3-5x.
Metabolic Maintenance - BioMaintenance™ Prebiotic + Fiber
$55.99
Digestion Support
Digestive Enzymes
Enzymes break down food while probiotics optimize the microbiome. Together they address both mechanical and microbial digestion.
Thorne - Advanced Digestive Enzymes (formerly Bio-Gest)
$56.99
Gut Lining Repair
L-Glutamine
Glutamine repairs intestinal permeability (leaky gut) while probiotics restore microbial balance — the two pillars of gut healing.
Thorne - L-Glutamine Powder
$67.99
Mucosal Protection
Zinc Carnosine
Zinc carnosine protects and heals the stomach and intestinal lining, creating a healthier environment for probiotic colonization.
Metagenics - Zinc Carnosine Complex
$65.99

Frequently Asked Questions

  • For general health maintenance, 10-20 billion CFU is sufficient. For therapeutic use (post-antibiotics, IBS, immune support), 50-100 billion CFU is recommended. More important than CFU count is strain diversity and survivability — a 5 billion spore-based probiotic may be more effective than a 100 billion conventional strain that doesn't survive stomach acid.

  • Take with food or within 30 minutes of eating. Food buffers stomach acid and increases probiotic survival by up to 100x. A small amount of fat in the meal further improves survival. Exception: spore-based probiotics (Bacillus strains) are acid-resistant and can be taken anytime.

  • Yes — temporary bloating, gas, or changes in bowel habits during the first 3-7 days is common and actually a positive sign. This 'die-off' reaction occurs as beneficial bacteria displace harmful organisms. If symptoms persist beyond 2 weeks, reduce the dose by half and gradually increase.

  • It depends on the strain. Most Lactobacillus and Bifidobacterium strains require refrigeration for viability. Spore-based probiotics (Bacillus) and Saccharomyces boulardii are shelf-stable. Check the label — if it says 'viable at time of manufacture' rather than 'at time of expiration,' refrigerate.

  • Yes — in fact, it's strongly recommended. Take the probiotic 2-3 hours apart from the antibiotic dose (so the antibiotic doesn't kill the probiotic). Saccharomyces boulardii is particularly resistant to antibiotics. Continue probiotics for at least 2-4 weeks after completing the antibiotic course.

  • For acute use (post-antibiotics, traveler's diarrhea), 4-8 weeks minimum. For chronic conditions (IBS, immune support), ongoing daily use is recommended. Probiotics don't permanently colonize — they exert benefits while you take them and for a limited time after stopping. Think of them as a daily maintenance supplement, not a one-time fix.

Real Reviews. Real Sources.

4.2
107 reviews
5 star
55%
4 star
25%
3 star
10%
2 star
6%
1 star
4%
All (107)
0 Clinical Research
iHerb
0 iHerb
Amazon
107 Amazon
0 Practitioners
Reddit
0 Reddit
X
0 X
TikTok
0 TikTok
Instagram
0 Instagram
Substack
0 Substack
Sort by:
Apotheca's Analysis — 50+ Signals Across 6 Dimensions
Saccharomyces Boulardii was scored across 50+ quality signals spanning manufacturing standards, lab verification, review consensus, practitioner confidence, community sentiment, and transparency. The Gabriel Score of 83 reflects data aggregated from 1 independent sources and 107 total reviews. No brand can pay to influence this score.
Loading reviews...

Compatibility Guide

Works Well With

Greens
Fiber feeds beneficial bacteria
Collagen
Supports gut lining integrity
Zinc
Both support gut barrier function

Take Separately From

No significant interactions identified. Always consult your healthcare provider.

Research Behind This

Allergy Research Group Product Quality Assessment
Gabriel Score Analysis
This product has been evaluated across 50+ quality signals including third-party testing, manufacturing standards, ingredient sourcing, and clinical evidence. Allergy Research Group products are analyzed against our comprehensive database of practitioner-grade supplements.
Practitioner Network Endorsement Data
Apotheca Practitioner Intelligence
Allergy Research Group is referenced across our practitioner network of clinical recommendations, YouTube health channels, and professional forums. Endorsement patterns are aggregated to assess real-world clinical confidence.

Practitioner Insights

Who This Is For

✓ Great For

Anyone looking for practitioner-grade supplement
Those who prioritize quality and transparency in supplements
People following a health protocol designed by their practitioner
Adults invested in long-term health optimization

⚠ Important Notes

Always consult your healthcare provider before starting any supplement
Check for interactions with current medications
If pregnant or nursing, seek professional guidance first
Compare options using Apotheca's AI to find the best fit for your goals
Allergy Research Group is part of Gabriel's curated marketplace of practitioner-grade supplement brands. Every product from Allergy Research Group is evaluated across 50+ quality signals including manufacturing standards, ingredient sourcing, third-party testing, and clinical evidence.
Gabriel VerifiedQuality Analyzed

† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Ask me anything about this product

Ask Gabriel

I see you're looking at Allergy Research Group - Saccharomyces Boulardii by Allergy Research Group. I can help you understand how this compares to similar products, check for interactions, or find the right dosage for your goals.

Want me to suggest complementary products, or do you have a specific health goal in mind?
Allergy Research Group
Allergy Research Group - Saccharomyces Boulardii
Gabriel Score
Strong quality signals. Meets recommended thresholds across most pillars.
Last updated: June 04, 2026
Score Breakdown
Manufacturing & GMP
93
Lab Verification
70
Review Consensus
86.1
Practitioner Confidence
52.0
Community & Social
63
Transparency
55
Consumer & Practitioner Intelligence
★★★★☆ 4.2 from 107 reviews across 1 sources
Amazon 107
Aggregated from verified purchases, practitioner clinical notes, and real-world outcome data
Scored across 50+ quality dimensions from 15+ independent databases. No brand can pay to influence their score. No sponsored rankings. Ever.
See how this product scores against your health profile · How the Gabriel Score works