There are millions of bacteria inside each person, forming an internal world inside us which is often referred to as ‘The Microbiome’. There is a lot of research ongoing at the moment about the impact the microbiome may have on the rest of the body. Natures Aid PRO-100 Ultra is a super strength daily supplement containing 8 strains of bacteria. Each ultimate strength capsule contains a guaranteed 100 billion live organisms, using 8 extensively researched strains of bacteria, including Lactobacillus Acidophilus, Lactobacillus Casei, Lactobacillus Reuteri, Lactobacillus Plantarum, Streptococcus Thermophilus, Bifidobacteria Lactis, Bifidobacteria Longum and Bifidobacteria Bifidus. Natures Aid PRO-100 Ultra bacteria have been chosen for their stability and guarantee 100 billion live bacteria per capsule. Refrigeration is optional. Natures Aid PRO-100 Ultra is Dairy Free.