Pharmacology MCQs
Pharmacology MCQs test knowledge of drug actions, interactions, classifications, pharmacokinetics, pharmacodynamics, and toxicology. Ideal for MDCAT, USMLE, FCPS, and NTS preparation, these quizzes strengthen medical understanding and boost exam performance through targeted practice.
Q: Drug used in iron poisoning
A) Deferoxamine
B) Naloxone
C) EDTA
D) Protamine sulfate
✅ Correct Answer: A
Explanation: Deferoxamine binds excess iron, allowing its excretion in urine.
Q: Cisplatin toxicity mainly affects
A) Heart
B) Kidneys
C) Skin
D) Bone marrow
✅ Correct Answer: B
Explanation: Nephrotoxicity is a major side effect of cisplatin, necessitating renal monitoring.
Q: Mechanism of action of benzodiazepines
A) Block sodium channels
B) Stimulate serotonin receptors
C) Inhibit acetylcholine
D) Increase GABA activity
✅ Correct Answer: D
Explanation: Benzodiazepines enhance GABAergic inhibition by increasing the frequency of chloride channel opening.