Ironwood Pharmaceuticals, Inc. is a pharmaceutical company. It discovers, develops and intends to commercialize differentiated medicines that improve patient's lives. Its products include linaclotide, a guanylate cyclase type-C agonist being developed for the treatment of patients with irritable bowel syndrome with constipation and chronic constipation. The company was founded by Peter M. Hecht, Eric F. Summers, G. Todd Milne, Brian M. Cali, Joseph C. Cook, Jr. and Gina Bornino Miller on January 5, 1998 and is headquartered in Cambridge, MA.