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: Preferred route for administering insulin
A) Intravenous
B) Oral
C) Subcutaneous
D) Intramuscular
✅ Correct Answer: C
Explanation: Insulin is administered subcutaneously due to degradation in the GI tract.
Q: Side effect associated with chronic aspirin use
A) Gastric ulceration
B) Palpitations
C) Skin rash
D) Hypoglycemia
✅ Correct Answer: A
Explanation: Aspirin irritates the gastric mucosa and can lead to ulcer formation.
Q: Atypical antipsychotic with least extrapyramidal effects
A) Haloperidol
B) Fluphenazine
C) Clozapine
D) Chlorpromazine
✅ Correct Answer: C
Explanation: Clozapine has minimal effects on dopamine D2 receptors, reducing movement disorders.
Q: Laxative increasing fecal bulk
A) Magnesium hydroxide
B) Lactulose
C) Psyllium
D) Bisacodyl
✅ Correct Answer: C
Explanation: Psyllium absorbs water in the intestine, forming a bulky, gel-like stool.
Q: Antifungal targeting ergosterol synthesis
A) Griseofulvin
B) Amphotericin B
C) Fluconazole
D) Nystatin
✅ Correct Answer: C
Explanation: Fluconazole inhibits the fungal cytochrome P450 enzyme needed for ergosterol synthesis.