NaturesPlus Immune Microbiome is a science-backed, premium supplement that provides robust nutritional support for the immune system and related functions, including bone health. NaturesPlus Immune Microbiome includes a unique, scientifically studied strain of Lactobacillus plantarum DR7 that promotes superior amounts of these highly regarded friendly microbes. Its no-refrigeration packaging maintains 10 billion fully viable friendly microorganisms for unmatched convenience and activity. Vitamin D contributes to the normal function of the immune system. Vitamin D plays a role in the process of cell division. Vitamin D contributes to the maintenance of normal bones.