Darolac Sachet 2 gm belongs to the class of 'probiotics', primarily used to treat diarrhoea. Darolac Sachet 2 gm also effectively treats irritable bowel syndrome, lactose intolerance, Crohn's disease (inflammatory bowel disease), and bacterial overgrowth in the intestines. Diarrhoea is a condition in which bowel movements are too frequent, leading to loose and watery stools.