Constipation is one of the most common gastrointestinal complaints in the United States. It afflicts approximately 1 in 6 individuals and is responsible for approximately 2.5 million physician visits each year. More than $400 million is spent annually on over-the-counter laxatives; at least 120 of these products are available. The management of constipation includes patient education about bowel function and diet, behavior modification, drug therapy, and infrequently, surgery. Revised 1/2012