Linaclotide is a prescription medicine that has been clinically proven to be effective in treating irritable bowel syndrome (IBS-C) and chronic enteroendocrine syndrome (CIC). Its mechanism of action is to increase intestinal fluid secretion, thereby softening stool and promoting regular bowel movements. This mechanism of action not only promotes bowel movements, but also relieves the discomfort caused by constipation, such as bloating, abdominal pain and straining during bowel movements.