The human gut is also known as GI (GastroIntestinal)Tract comprises the esophagus, stomach, small intestine, and colon. The gut contains billions of bacteria of different types. Bad bacteria in the gut can cause problems like dyspepsia, reflux, IBS( Irritable Bowel Syndrome), diarrhea, constipation, and gas. The GI tract also contains good bacteria which support health and life. Hence they are called probiotics??????Pro??? (supporting, promoting); ???biosis??? (life and health). Good bacteria also affect the growth of bad bacteria adversely and can reduce or prevent infections and diseases. Good bacteria aid digestion, support absorption of nutrients, prevent or reduce constipation and gas formation and also promote immunity