Question
| A. | Drug A |
| B. |
Drug B |
| C. |
Drug C |
| D. |
Both Drugs A and B |
|
Correct Answer � A Explanation |
 |
Answer A)
In Log DRC, More the curve is on the left side, more potent is the drug
In the field of pharmacology, potency is a measure of drug activity expressed in terms of the amount required to produce an effect of given intensity.
A highly potent drug (e.g., fentanyl, alprazolam, risperidone) evokes a given response at low concentrations, while a drug of lower potency (meperidine, diazepam, ziprasidone) evokes the same response only at higher concentrations. Higher potency does not necessarily mean more side effects
Schematic illustration of the dose-response curves for a series of agonists (A, B, C and D) that have the same efficacy, but differ in terms of their potency. The most potent drug (Drug A) has the lowest EC50 value, and is approximately 20-30 fold more potent than Drug D.