Therapeutic index of drug is indicator of:: (A) Potency, (B) Safety, (C) Efficacy, (D) All
Answer is B. Ans. B. SafetyTherapeutic index is ratio of LD50 and ED50. LD50 is defined as lethal dose which kill 50 % animals who are given the dose. ED50 is defined as effective dose which is effective in 50 % of the population. It is also known as margin of safety.