It is now widely acknowledged that probiotics can have a very beneficial affect on an infant’s evolving digestive system as it gradually learns to cope with new foods. Probiotics are friendly, live bacteria that help to maintain a natural balance of organisms in the intestines. They improve health conditions in several ways. They assist in helping promote the build-up of the babies beneficial gut flora. They have anti-bacterial and anti-fungal properties. They make the immune system healthy and more responsive. They also enhance the production of certain cytokines such as Interleukin-6 (IL- 6), Interferon gamma, Interleukin-10, Tissue necrosis factor and Interleuken-1 beta. Probiotic strains increase the phagocytic activity of white blood cells called leukocytes. They are beneficial in preventing the demise of intestinal tissue and decreases the risk of atopic eczema, which is an allergic condition that commonly occurs in infants. Probiotics play a vital role in maintaining the health of gastrointestinal tract.