Review

Bulking agents, antispasmodics and antidepressants for the treatment of irritable bowel syndrome.

Cochrane Db Syst Rev. 2011 Aug 10; 2011 (8): CD003460CD003460.
Randomized Controlled Trial

Efficacy of linaclotide for patients with chronic constipation.

Gastroenterology. 2010 Mar 1;138(3):886-95.e1.
Randomized Controlled Trial

Symptomatic efficacy of beidellitic montmorillonite in irritable bowel syndrome: a randomized, controlled trial.

Aliment. Pharmacol. Ther. 2005 Feb 15;21(4):435-44.