Features the probiotics Lactobacillus acidophilus and Bifididobacterium longum, 2 strains which help with healthy digestion. This formula contains good lactic acid bacteria that colonize the gastrointestinal tract to contribute to a healthy gut flora, maintain proper pH balance in the small intestine, and keep your bowel movements regular. The intestinal tract contains billions of microorganisms in a delicate balance of beneficial probiotic bacteria and adverse pathogens. Many factors can affect this balance, including a temporarily compromised immune system, poor diet, stress, and a change in water and food sources while travelling. Lactobacillus and Bifidobacterium strains effectively maintain and establish a healthy microflora balance, while discouraging the growth of opportunistic pathogens, such as yeast, E. coli, Clostridium, and Shigella. Together they help maintain a proper pH balance in the small intestine, protect mucous membranes throughout the digestive tract, and promote regular bowel movements.