RALEIGH, N.C.--(BUSINESS WIRE)--Salix Pharmaceuticals, Ltd. (NASDAQ:SLXP) today announced that the Company has acquired rights to crofelemer from Napo Pharmaceuticals, Inc. Crofelemer currently is being investigated in a Phase 3 study as an anti-secretory anti-diarrheal agent for the treatment of chronic diarrhea in people living with HIV, or HIV-associated diarrhea. Salix now has an exclusive license to this indication and the additional indications of pediatric diarrhea and acute infectious diarrhea in North America, Europe (excluding Iceland, Liechtenstein, Norway and Switzerland) and Japan. Salix also has a worldwide license to all other possible human indications, including irritable bowel syndrome, for crofelemer.