Pharmacology MCQs
Pharmacology MCQs help learners understand the actions, interactions, uses, and side effects of various drugs. These questions cover pharmacokinetics, pharmacodynamics, drug classifications, and toxicology. Practicing them aids in mastering this crucial medical subject and performing well in exams such as MDCAT, USMLE, FCPS, and NTS.
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.