Alvimopan, a peripherally acting mu-opioid receptor antagonist, compared with placebo in postoperative ileus after major abdominal surgery: results of a randomized, double-blind, controlled study.
Viscusi ER, Goldstein S, Witkowski T, Andonakakis A, Jan R, Gabriel K, Du W, Techner L, Wallin B. Alvimopan, a peripherally acting mu-opioid receptor antagonist, compared with placebo in postoperative ileus after major abdominal surgery: results of a randomized, double-blind, controlled study. Surg Endosc. 2006 Jan; 20(1):64-70.