With 36 strains and 100 billion CFUs per serving, Ultimate Probiotic is one of the most value-driven probiotic and prebiotic supplements on the market today. This daily probiotic will help strengthen the digestive system for stronger gut health and immunity. Ultimate Probiotic’s premium formula has 24 probiotic strains, 12 soil-based microorganism strains, and an advanced prebiotic blend.