0a: Effect of rolapitant on dextromethorphan PK---day 0 vs day 0*C* ~max~0.000.00Rolapitant + DEX vs DEX0.00(0.00, 0.00) AUC~(0--last)~0.0000.00Rolapitant + DEX vs DEX0.00(0.00, 0.00) AUC~(0--inf)~00.0000.00Rolapitant + DEX vs DEX0.00(0.00, 0.00)0a: Effect of rolapitant on dextromethorphan PK---day 0