 It's totally normal to be constipated with belly pain, straining, and bloating again and again. No way. You could have a chronic condition called irritable bowel syndrome with constipation, or IBSC. Linzess, or linaclotide, is a prescription that treats IBSC in adults. Linzess works differently than laxatives to help relieve belly pain and let you have more frequent and complete bowel movements.