Probiotics play a key role in human nutrition and health in balancing the intestinal microflora naturally. Benefits of regular consumption of probiotics include enhanced immune function, improved colonic integrity, decreased incidence and duration of intestinal infections, down-regulated allergic response, and improved digestion and elimination. Multiple mechanisms of action for the beneficial effect of probiotics have been postulated, including prevention of pathogenic bacterial growth, production of antimicrobial agents, stimulation of mucosal barrier function, and altering immunoregulation (how your immune system works).