Background: Methylnaltrexone (MNTX) is a peripherally acting µ-opioid receptor antagonist indicated for opioid-induced constipation (OIC). We evaluated whether baseline use of laxatives, including stimulants, osmotic agents, stool softeners, or combinations thereof affects the efficacy and safety of MNTX. Methods: This post hoc analysis included pooled data from 2 multicenter, randomized, double-blind, placebo (PBO)-controlled, institutional review […]