1) Fatty acid 
Lubiprostone (rINN, marketed under the trade name Amitiza) is a medication used in the management of chronic idiopathic constipation, predominantly irritable bowel syndrome-associated constipation in women and opioid-induced constipation. It was initially approved by the U.S. Food and Drug Administration (FDA) in 2006. ==Medical uses== Lubiproston...