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 used to manage alcohol withdrawal seizures
A) Fluoxetine
B) Haloperidol
C) Diazepam
D) Phenytoin
✅ Correct Answer: C
Explanation: Benzodiazepines like diazepam are first-line agents for managing alcohol withdrawal symptoms.
Q: Preferred agent for treating hypertension in pregnancy
A) Propranolol
B) Lisinopril
C) Methyldopa
D) Ramipril
✅ Correct Answer: C
Explanation: Methyldopa is considered safe during pregnancy and commonly used to manage hypertension.
Q: Mechanism by which proton pump inhibitors reduce acidity
A) Inhibiting gastric ATPase
B) Blocking cholinergic receptors
C) Neutralizing acid
D) Blocking H2 receptors
✅ Correct Answer: A
Explanation: PPIs inhibit the H⁺/K⁺ ATPase in gastric parietal cells, reducing acid secretion.
Q: Rifampin changes urine color to
A) Yellow
B) Orange-red
C) Green
D) Blue
✅ Correct Answer: B
Explanation: Rifampin causes orange-red discoloration of urine, sweat, and tears due to its pigment.
Q: Beta-2 agonists like salbutamol are used for
A) Bronchodilation
B) Diuresis
C) Analgesia
D) Sedation
✅ Correct Answer: A
Explanation: Beta-2 agonists relax bronchial smooth muscle, making them effective in asthma.