Pharmacology · single question
On a dose–response graph, which drug is MORE POTENT — the one whose curve is shifted to the LEFT (Drug A)?
Show answer and explanation
Correct answer: A. Drug A (curve to the left)
- A. Correct. Potency relates to the dose needed for an effect; the curve shifted LEFT (lower dose for the same effect) is more potent — Drug A.
- B. Incorrect. A right-shifted curve requires a higher dose for the same effect = LESS potent.