PHARMACOLOGY MCQ MASTERCLASS
100 PHARMACOLOGY MULTIPLE CHOICE QUESTIONS
With Detailed Explanations & Rationales
Medical, Nursing & Pharmacy Exam Preparation
Perfect for: USMLE Step 1 • NCLEX-RN • NCLEX-PN • Pharmacy Board
Exams • Medical School Finals • Nursing School Exams • Clinical Pharmacology
Review
Topics Covered: Cardiovascular • CNS & Psychiatry • Antibiotics & Anti-
infectives • Endocrine & Metabolic • Gastrointestinal & Hepatic • Respiratory &
Allergy • Oncology & Immunology • Pain, Anesthesia & MSK • Toxicology & Drug
Interactions
Skill Level: Intermediate → Advanced
Total Questions: 100
Every question includes a detailed explanation with mechanism of action, clinical
pearls, and high-yield facts.
Designed by pharmacology educators for maximum exam success.
TABLE OF CONTENTS
Section Questions Topic
1 1–15 Cardiovascular Pharmacology
2 16–30 CNS & Psychiatric Pharmacology
3 31–45 Antibiotics & Anti-infectives
4 46–55 Endocrine & Metabolic
5 56–65 Gastrointestinal & Hepatic
pharmacology
,Section Questions Topic
6 66–75 Respiratory & Allergy
7 76–85 Oncology & Immunology
8 86–95 Pain, Anesthesia & Musculoskeletal
9 96–100 Toxicology & Drug Interactions
HOW TO USE THIS DOCUMENT
1. Attempt each question independently before checking the answer.
2. Read the explanation carefully — understanding mechanism is key to
pharmacology.
3. Note the clinical pearls — these are high-yield for exams.
4. Create flashcards for drugs you consistently miss.
5. Review incorrect answers — this is where the most learning happens.
STUDY STRATEGIES FOR PHARMACOLOGY
• Learn mechanisms first — if you know HOW a drug works, you can
predict its effects and side effects.
• Group drugs by class — learn the prototype and apply it to other drugs
in the class.
• Know the antidotes — examiners love antidote questions.
• Memorize contraindications — especially pregnancy categories and
drug interactions.
• Understand pharmacokinetics — half-life, metabolism, and excretion
determine dosing.
• When in doubt, think mechanism — mechanism predicts everything.
Question 1
Which beta-blocker is most cardioselective (β1-selective)?
pharmacology
,A. Propranolol B. Metoprolol C. Carvedilol D. Labetalol
Answer: B
Explanation
Metoprolol is a β1-selective (cardioselective) beta-blocker, making it preferable
for patients with asthma or COPD compared to non-selective agents like
propranolol.
Question 2
Which calcium channel blocker is most effective for rate control in atrial
fibrillation?
A. Amlodipine B. Nifedipine C. Diltiazem D. Felodipine
Answer: C
Explanation
Diltiazem (and verapamil) are non-dihydropyridine calcium channel blockers that
slow AV nodal conduction, making them effective for ventricular rate control in
AFib.
Question 3
ACE inhibitors are contraindicated in which condition?
A. Hypertension B. Heart failure C. Bilateral renal artery stenosis D. Post-MI
Answer: C
Explanation
ACE inhibitors are absolutely contraindicated in bilateral renal artery stenosis
because they reduce GFR by inhibiting efferent arteriole constriction, potentially
causing acute kidney injury.
pharmacology
, Question 4
Which antihypertensive is first-line for pregnancy-induced hypertension?
A. Lisinopril B. Losartan C. Labetalol D. Atenolol
Answer: C
Explanation
Labetalol (and methyldopa, nifedipine) are safe in pregnancy. ACE inhibitors and
ARBs are teratogenic and absolutely contraindicated in pregnancy.
Question 5
The antidote for heparin overdose is:
A. Vitamin K B. Protamine sulfate C. N-acetylcysteine D. Atropine
Answer: B
Explanation
Protamine sulfate binds to heparin to form a stable salt, neutralizing its
anticoagulant effect. Vitamin K is used for warfarin reversal.
Question 6
Warfarin inhibits which vitamin K-dependent clotting factors?
A. II, VII, IX, X B. I, V, VIII, XIII C. III, VI, XI, XII D. IV, VII, X, XIII
Answer: A
Explanation
Warfarin inhibits vitamin K epoxide reductase, reducing synthesis of factors II,
VII, IX, and X, plus proteins C and S.
Question 7
Which statin is most potent at lowering LDL cholesterol?
pharmacology
100 PHARMACOLOGY MULTIPLE CHOICE QUESTIONS
With Detailed Explanations & Rationales
Medical, Nursing & Pharmacy Exam Preparation
Perfect for: USMLE Step 1 • NCLEX-RN • NCLEX-PN • Pharmacy Board
Exams • Medical School Finals • Nursing School Exams • Clinical Pharmacology
Review
Topics Covered: Cardiovascular • CNS & Psychiatry • Antibiotics & Anti-
infectives • Endocrine & Metabolic • Gastrointestinal & Hepatic • Respiratory &
Allergy • Oncology & Immunology • Pain, Anesthesia & MSK • Toxicology & Drug
Interactions
Skill Level: Intermediate → Advanced
Total Questions: 100
Every question includes a detailed explanation with mechanism of action, clinical
pearls, and high-yield facts.
Designed by pharmacology educators for maximum exam success.
TABLE OF CONTENTS
Section Questions Topic
1 1–15 Cardiovascular Pharmacology
2 16–30 CNS & Psychiatric Pharmacology
3 31–45 Antibiotics & Anti-infectives
4 46–55 Endocrine & Metabolic
5 56–65 Gastrointestinal & Hepatic
pharmacology
,Section Questions Topic
6 66–75 Respiratory & Allergy
7 76–85 Oncology & Immunology
8 86–95 Pain, Anesthesia & Musculoskeletal
9 96–100 Toxicology & Drug Interactions
HOW TO USE THIS DOCUMENT
1. Attempt each question independently before checking the answer.
2. Read the explanation carefully — understanding mechanism is key to
pharmacology.
3. Note the clinical pearls — these are high-yield for exams.
4. Create flashcards for drugs you consistently miss.
5. Review incorrect answers — this is where the most learning happens.
STUDY STRATEGIES FOR PHARMACOLOGY
• Learn mechanisms first — if you know HOW a drug works, you can
predict its effects and side effects.
• Group drugs by class — learn the prototype and apply it to other drugs
in the class.
• Know the antidotes — examiners love antidote questions.
• Memorize contraindications — especially pregnancy categories and
drug interactions.
• Understand pharmacokinetics — half-life, metabolism, and excretion
determine dosing.
• When in doubt, think mechanism — mechanism predicts everything.
Question 1
Which beta-blocker is most cardioselective (β1-selective)?
pharmacology
,A. Propranolol B. Metoprolol C. Carvedilol D. Labetalol
Answer: B
Explanation
Metoprolol is a β1-selective (cardioselective) beta-blocker, making it preferable
for patients with asthma or COPD compared to non-selective agents like
propranolol.
Question 2
Which calcium channel blocker is most effective for rate control in atrial
fibrillation?
A. Amlodipine B. Nifedipine C. Diltiazem D. Felodipine
Answer: C
Explanation
Diltiazem (and verapamil) are non-dihydropyridine calcium channel blockers that
slow AV nodal conduction, making them effective for ventricular rate control in
AFib.
Question 3
ACE inhibitors are contraindicated in which condition?
A. Hypertension B. Heart failure C. Bilateral renal artery stenosis D. Post-MI
Answer: C
Explanation
ACE inhibitors are absolutely contraindicated in bilateral renal artery stenosis
because they reduce GFR by inhibiting efferent arteriole constriction, potentially
causing acute kidney injury.
pharmacology
, Question 4
Which antihypertensive is first-line for pregnancy-induced hypertension?
A. Lisinopril B. Losartan C. Labetalol D. Atenolol
Answer: C
Explanation
Labetalol (and methyldopa, nifedipine) are safe in pregnancy. ACE inhibitors and
ARBs are teratogenic and absolutely contraindicated in pregnancy.
Question 5
The antidote for heparin overdose is:
A. Vitamin K B. Protamine sulfate C. N-acetylcysteine D. Atropine
Answer: B
Explanation
Protamine sulfate binds to heparin to form a stable salt, neutralizing its
anticoagulant effect. Vitamin K is used for warfarin reversal.
Question 6
Warfarin inhibits which vitamin K-dependent clotting factors?
A. II, VII, IX, X B. I, V, VIII, XIII C. III, VI, XI, XII D. IV, VII, X, XIII
Answer: A
Explanation
Warfarin inhibits vitamin K epoxide reductase, reducing synthesis of factors II,
VII, IX, and X, plus proteins C and S.
Question 7
Which statin is most potent at lowering LDL cholesterol?
pharmacology
