3 Strain Probiotic (good bacteria) - Lactobacillus casei, Lactobacillus rhamnosus & Streptococcus thermophilus. Chi siamo?. Plus 5 Billion Saccharomyces Boulardii (S.boulardii). NutriGUT-D also contains 5 billion Saccharomyces Boulardii, Perilla extract, Glutamine and Vitamin A.