List of products in the National Drug Code with proprietary name . See also Warning section. Linaclotide is used to treat certain types of bowel problems (irritable bowel syndrome with constipation, chronic idiopathic constipation). It works by increasing fluid in your intestines and helping speed up movement of food through the gut. Linaclotide may improve stool texture and lessen symptoms such as bloating, abdominal pain/discomfort, straining, and feelings of incomplete bowel movements. This medication must not be used in children younger than 6 years because of the risk of serious side effects.