RecruitingPhase 3Drug trialAlvimopan Versus Placebo in Patients Undergoing Radical Cystectomy on an Enhanced Recovery ProtocolTo determine if Alvimopan during open or robotic radical cystectomy with urinary diversion results in quicker return of bowel function (GI-2 recovery = time to upper \[first toleration of solid food\] and lower \[first bowel movement\] gastrointestinal recovery) compared to placebo.