下列有關治療指數(Therapeutic index)的敘述,何者正確?
(A)Therapeutic index = median effective dose/median lethal dose
(B)Therapeutic index = median lethal dose/median effective dose
(C)Therapeutic index = median effective dose/daily dose
(D)Therapeutic index = daily dose/median effective dose
承上題,下列那一種藥物的安全性最高?
(A)Morphine(Therapeutic index = 10)
(B)Chlorpromazine(Therapeutic index = 30)
(C)Phenobarbital(Therapeutic index = 50)
(D)Diazepam(Therapeutic index = 1000)