Source Naturals Life flora is an advanced and potent microflora product. It was developed by Dr. Khem Shahani, a prominent flora researcher at the University of Nebraska. It contains two complementary forms of bifidus, DDS-1 acidophilus, Streptococcus faecium and Lactobacillus casei. Friendly microflora support colon health by altering the intestinal ecology to favor friendly flora. Acidophilus also manufactures some B-vitamins, especially folic acid. Life Flora's cells are specially protected before and after freeze-drying by a unique stabilizing process.