Probiotic Boost Daily helps maintain a balanced level of natural bacteria in the body that is vital in a healthy digestive system. Probiotics help to enhance mineral metabolism and stimulate the immune system. They deprive invaders of nutrients and secrete acids that less-friendly microbes don’t tolerate well. They also reinforce the mucosal barrier of the intestines. Healthy mucus blocks dangerous pathogens, toxins and allergens, and helps the immune system “learn” which ones are not safe.