The current review work deals about the details of microbes as a probiotic and its beneficial effects for different applications. Probiotics are microorganisms that have health promoting influence in the body. They must be able to withstand the acid in the stomach and bile salts to perform the natural functions in the body. Probiotics have wide range of benefits including boosting the immune system, combating infections, allergies and regulating the digestive system as well as relieving lactose intolerance. Probiotics are classified as food supplements and suited to be used in yogurts, curds and their drinks. Fruit and vegetable juices have also been found to be suitable for the incorporation of probiotics as they promote health by way of providing vitamins and minerals which make it a complementary and an alternative to medicines. The acceptance of a probiotic foods India is growing slowly however, it has a good potential for growth as a health food.