RALEIGH, N.C.--(BUSINESS WIRE)--Salix Pharmaceuticals, Ltd. (NASDAQ:SLXP) today announced that numerous presentations describing the investigation of several of the Company’s products – including rifaximin and MOVIPREP® -- occurred during Digestive Disease Week DDW® 2011. DDW 2011 is being held in Chicago, IL, Saturday, May 7 – Tuesday, May 10, 2011.