Dextromethorphan is a synthetic compound.Dextromethorphan has been abused and is claimed to be habit forming but has not been reported to produce physical dependence.

• 氢溴酸右美沙芬和其代谢物右啡烷的止咳作用主要是由于与中央神经系统的非鸦片样药感受器官结合。