协同器官; 协作剂; 增效剂
Synergist \Syn"er*gist\, n. [Cf. F. synergiste.] 1. One who holds the doctrine of synergism. 2. (Med.) A remedy which has an action similar to that of another remedy, and hence increases the efficiency of that remedy when combined with it.
synergist n : a drug that augments the activity of another drug [ant: {antagonist}]