Gut Ingredients: Formulated specifically for the unique needs of women, Once Daily Women's Probiotic contains a probiotic blend totaling 5 billion colony forming units (CFU) for optimal digestive and immune support; we've also added a whole food prebiotic fiber blend to help promote the growth of good bacteria. Our probiotics are professional grade, non-GMO, vegan and contain no: binders, soy, gluten, milk, egg, wheat, peanuts, shellfish, additives or preservatives. Backed by Science: Our probiotics are extensively researched to ensure you get the highest quality, most diverse strains, packaged in a shelf-stable bottle to ensure freshness and activity.