This Swanson product is formulated with science and crafted with care. Dr. Stephen Langers Ultimate 16 Strain Probiotic is a premier probiotic supplement delivering 3.2 billion CFUs per serving from 16 unique strains. This non-GMO dietary supplement is acid-resistant to protect live cultures from harsh stomach acid. The formula also includes fructooligosaccharides to support digestion pathways.* This dietary supplement supports digestive health by providing targeted ingredients that encourage a balanced microbiome.* The blend is gluten free and vegan, so it fits seamlessly into plant-based diets. Regular use may help you sustain a healthy gut and balanced colon health.* Beyond digestive balance, Dr. Langers formula offers immune support by interacting with your existing systems. By supporting digestion and immune pathways together, the formula is designed to work synergistically within your bodys processes.* We don\'t cut corners when it comes to quality. We provide hundreds of honest-to-goodness health products because we carefully select and source our ingredients and only work with partners we know and trust. Driven by over 150 years of combined experience, our dedicated team of pharmacists, scientists, food nutritionists, quality experts, research and development and product specialists ensures that all of our products are tested to ensure guaranteed purity, potency and reliability.