Sacro-B™
Scored by the Formulate Research Team · Last reviewed May 2026
Overview: Thorne Sacro-B™
A probiotic yeast that supports healthy intestinal flora balance and mitigates occasional diarrhea* Sacro-B is a probiotic yeast species that enhances immune function in the gut by increasing sIgA and is effective for occasional diarrhea.*
Score Breakdown
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Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Saccharomyces boulardii | 750 mg |
Certifications & Testing
Other Ingredients
Beet Fiber, Calcium Laurate, Hypromellose (derived from cellulose) capsule, Medium Chain Triglycerides
Recommended Use
Take 1 capsule one to three times daily between meals or as recommended by your health-care practitioner.
Warnings
ALLERGY WARNING This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. Sacro-B contains a product derived from yeast. PREGNANCY If pregnant, consult your health-care practitioner before using this product. INTERACTIONS There are no known adverse interactions or contraindications at publication date. OTHER WARNINGS It is not recommended to rem
Frequently Asked Questions
What is Thorne Sacro-B™'s Formulate score?
Thorne Sacro-B™ scores 68 out of 100 (grade B) on Formulate's ingredient-level rubric, which weighs evidence quality, dose accuracy, bioavailability, transparency, safety, and manufacturing practices.
Is Thorne Sacro-B™ worth it?
Thorne Sacro-B™ scores 68/100 (grade B). That's an above-average result — most of its doses and ingredient forms are well-chosen, with only minor gaps in dosing, transparency, or testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Thorne Sacro-B™?
Each serving contains Saccharomyces boulardii (750 mg). Serving size: 1 Capsule. 60 servings per container.
How do I take sacro-b™?
Take 1 capsule one to three times daily between meals or as recommended by your health-care practitioner.
Who makes Sacro-B™?
Sacro-B™ is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne Sacro-B™ third-party tested?
Thorne lists the following certifications and testing for this product: NSF Certified, Gluten Free, Dairy Free, Soy Free, Thorne Verified, Natural Flavors, Natural Colors, GMP Certified.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.