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: Vancomycin is reserved for serious infections caused by
A) Protozoa
B) Gram-negative bacteria
C) Gram-positive bacteria
D) Viruses
✅ Correct Answer: C
Explanation: Vancomycin targets resistant gram-positive organisms like MRSA.
Q: A major side effect of thiazide diuretics includes
A) Hypokalemia
B) Hypercalcemia
C) Tachycardia
D) Hyperglycemia
✅ Correct Answer: A
Explanation: Thiazides promote potassium loss in urine.
Q: The therapeutic effect of digoxin is mainly due to increased
A) Cardiac contractility
B) Renal excretion
C) Liver metabolism
D) Blood viscosity
✅ Correct Answer: A
Explanation: Digoxin enhances calcium availability in cardiac cells, boosting contraction.
Q: Monoclonal antibodies are produced using
A) DNA fingerprinting
B) Hybridoma technology
C) Radiolabeling
D) Fermentation
✅ Correct Answer: B
Explanation: Hybridoma cells combine mouse B cells with tumor cells to produce antibodies.
Q: Levodopa helps Parkinson’s patients by increasing
A) Dopamine levels
B) Histamine receptors
C) Acetylcholine action
D) GABA synthesis
✅ Correct Answer: A
Explanation: Levodopa is converted to dopamine in the brain to restore motor control.