Liver and bile duct conditions that can cause bile acid deficiency and oily stools include: Lipase inhibitors like orlistat (sold under brand names like Alli and Xenical) are weight loss ...

16%). Gastrointestinal adverse events were more common in the orlistat group, ranging from 9% with fecal incontinence to 50% with fatty/oily stool. These findings are intriguing, but they are ...