Natures Aid Probiotic Complex (With Bifidus and Fos) 60s provides 2 billion live organisms of Lactobacillus Acidophilus and Bifidobacteria Bifidus. This product also provides 100mg FOS. FOS, or Fructooligosaccharides, is a natural fiber found in raw fruits and vegetables, which offers a natural source of what is often referred to as a prebiotic.
