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: Rifampin is a cornerstone in the treatment of
A) Tuberculosis
B) Anemia
C) Malaria
D) Hypertension
✅ Correct Answer: A
Explanation: Rifampin inhibits bacterial RNA synthesis, especially in Mycobacterium tuberculosis.
Q: Adverse effects of aminoglycosides often include
A) Hyperglycemia
B) Nephrotoxicity
C) Constipation
D) Bradycardia
✅ Correct Answer: B
Explanation: Aminoglycosides may damage kidney function and require dosage monitoring.
Q: Lidocaine is widely used as a
A) Laxative
B) Local anesthetic
C) Diuretic
D) Antihistamine
✅ Correct Answer: B
Explanation: Lidocaine blocks sodium channels in nerves, preventing pain transmission.
Q: Acetaminophen overdose may cause severe damage to the
A) Heart
B) Liver
C) Pancreas
D) Lungs
✅ Correct Answer: B
Explanation: Hepatotoxicity is the major risk in high doses of acetaminophen.
Q: Clindamycin is known for its risk of causing
A) Renal stones
B) C. difficile colitis
C) Seizures
D) Skin rash
✅ Correct Answer: B
Explanation: Clindamycin may disrupt gut flora, leading to Clostridioides difficile overgrowth.