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 causing ototoxicity and nephrotoxicity
A) Azithromycin
B) Chloramphenicol
C) Amikacin
D) Ceftriaxone
✅ Correct Answer: C
Explanation: Amikacin, an aminoglycoside, is toxic to both the kidneys and the auditory system.
Q: Prophylactic drug for rheumatic fever
A) Ciprofloxacin
B) Tetracycline
C) Penicillin
D) Erythromycin
✅ Correct Answer: C
Explanation: Long-term use of penicillin is recommended to prevent recurrence of rheumatic fever.
Q: Mode of action of sulfonamides
A) Inhibit DNA gyrase
B) Inhibit folate synthesis
C) Disrupt cell membrane
D) Interfere with peptidoglycan
✅ Correct Answer: B
Explanation: Sulfonamides block dihydropteroate synthase, an enzyme in folate synthesis.
Q: Cholinergic crisis is managed using
A) Pilocarpine
B) Atropine
C) Neostigmine
D) Physostigmine
✅ Correct Answer: B
Explanation: Atropine, a muscarinic antagonist, counters the excessive cholinergic activity.
Q: Teratogenic drug leading to phocomelia
A) Carbamazepine
B) Valproic acid
C) Thalidomide
D) Phenytoin
✅ Correct Answer: C
Explanation: Thalidomide causes limb deformities when used during early pregnancy.