Natures Aid Pro-30 MAX is a daily complex containing 8 extensively researched strains of bacteria; L.acidophilus, L.plantarum, L.casei, L.reuteri, B.bifidum, B.lactis, B.longum and S.thermophilus, providing 30 billion live bacteria per capsule. Pro-30 MAX has been specifically formulated by bio-chemists and nutritionists, based on scientific research.