Acidophilus (Lactobacillus acidophilus ) is a group of “friendly” bacteria that normally live in the human small intestines. In our intestinal tracts reside “friendly” and “unfriendly” bacteria.  A poor diet, stress, smoking or other environmental factors can cause the “unfriendly” bacteria to take over which may result in stomach upset, irregularity, bloating or a decrease immune function.  Adding a probiotic like Natrol Acidophilus to your diet, may help restore an intestinal balance of bacteria.Support gastrointestinal healthHelps improve intestinal motility and maintain regularityMay help maintaining proper immune functionGuaranteed 1 billion live culturesGo ahead, own your health with Natrol Acidophilus Probiotic.