Regarding efficacy and potency of a drug, all are true EXCEPT:

A. In a clinical setup, efficacy is more important than potency

B. In the log dose response curve, the height of the curve corresponds with efficacy

C. ED50 of the drug corresponds to the efficacy

D. Drugs that produce a similar pharmacological effect can have different levels of efficacy

Correct Answer: ED50 of the drug corresponds to the efficacy

Description: Ans. C. ED50 of the drug corresponds to the efficacyED5 corresponds to the potency of the drugED50 is the dose required to produce desired effect in 50% of individuals. Dose is related to potency not efficacyLD50 is the dose required to produce death in 50% of individualsTherapeutic index (TI): =ED50 LD50 It is a measure of safety of a drug.

Category: Pharmacology

Share:

← Previous MCQ

Next MCQ →

Get More

Subject Mock Tests

Practice with over 200,000 questions from various medical subjects and improve your knowledge.

Attempt a mock test now

Mock Exam

Take an exam with 100 random questions selected from all subjects to test your knowledge.

Coming Soon

Get More

Subject Mock Tests

Try practicing mock tests with over 200,000 questions from various medical subjects.

Attempt a mock test now

Mock Exam

Attempt an exam of 100 questions randomly chosen from all subjects.

Coming Soon