Probiotics are live bacteria and yeasts that are key players in your digestive and immune health.  We, humans, are mostly microbes, over 100 trillion of them. Microbes outnumber our human cells ten to one. The majority live in our gut, particularly in the large intestine. The microbiome is the genetic material of all the microbes - bacteria, fungi, protozoa, and viruses - that live on and inside the human body. The number of genes in all the microbes in one person’s microbiome is 200 times the number of genes in the human genome. The bacteria in the microbiome help digest our food, regulate our immune system, protect against other bacteria that cause disease, and produce vitamins including B vitamins B12, thiamine, and riboflavin, and Vitamin K.  The microbiome is essential for human development, immunity, and nutrition. The bacteria living in and on us are not invaders but beneficial colonizers.  We carry a plethora of probiotic products because the research continues to evolve in the area of probiotic strain-specific therapeutics.