Gut Health: Provides probiotic support for the growth of beneficial gut flora to aid digestive health and provide relief for those who face bouts of occasional diarrhea* Immune Function: Supports an increase in the production of secretory IgA for a stronger first line of defense in the gastrointestinal tract* Shelf-Stable Probiotic: Every 1-capsule serving provides 5 billion CFUs of Saccharomyces boulardii no refrigeration required Third-Party Certified: This product has been third-party tested and certified to verify what's in the package matches what's on the label and to confirm it contains no unsafe levels of contaminants Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey) Thorne Sacro-B Probiotic is a powerful immune support supplement that aids gut health and overall immune function. This gluten-free probiotic supports the increase of secretory IgA, the body's first line of defense in the gut against harmful pathogens and toxins, for healthy digestion. This probiotic supports the growth of beneficial gut flora, which aids digestion and regular bowel movements. It can also support the relief of occasional constipation, making it a versatile digestive aid. Thorne Sacro-B Probiotic is a convenient and effective way to support gut health and aid overall immune function. With its gluten-free formula and digestive aid properties, this probiotic is a must-have for anyone looking to improve their health and wellness.