Irritable bowel syndrome is mainly a disease related to the disorder of the plant nervous system of the intestine, and the main clinical manifestations are abdominal pain, diarrhea, constipation and other symptoms. For the irritable bowel syndrome, what is the best medicine to take? Third, diarrhea as the main manifestation, you can eat an appropriate amount of montelukast to stop diarrhea and oral probiotics, such as lactobacillus, bifidobacterium triptans capsules, etc. Fourth, the diet should be light, low-fat, low-sugar food, and more vitamin and protein-rich food.