Pharmacology MCQs
Pharmacology MCQs help learners understand the actions, interactions, uses, and side effects of various drugs. These questions cover pharmacokinetics, pharmacodynamics, drug classifications, and toxicology. Practicing them aids in mastering this crucial medical subject and performing well in exams such as MDCAT, USMLE, FCPS, and NTS.
Q: Isoniazid acts against tuberculosis by inhibiting
A) Protein translation
B) Cell wall cross-linking
C) RNA polymerase
D) Mycolic acid synthesis
Q: Therapeutic use of warfarin is primarily aimed at preventing
A) Hypertension
B) Thromboembolism
C) Hyperglycemia
D) Asthma
Q: Furosemide induces diuresis by blocking
A) Na⁺-K⁺-2Cl⁻ symporter
B) Beta receptors
C) Sodium-potassium pump
D) Calcium channels
Q: Inhaled corticosteroids are first-line therapy in
A) Asthma
B) Diabetes
C) Anemia
D) Tuberculosis
Q: MAO inhibitors elevate mood by preventing
A) Acetylcholine synthesis
B) Dopamine uptake
C) GABA release
D) Monoamine degradation
Q: Metronidazole targets anaerobic organisms by damaging
A) Cell membranes
B) DNA structure
C) ATP synthase
D) Protein receptors
Q: Haloperidol is classified as a
A) Beta blocker
B) SSRI
C) Typical antipsychotic
D) Diuretic
Q: Beta-blockers lower blood pressure by reducing
A) Blood sugar
B) Kidney filtration
C) Heart rate
D) Bile secretion
Q: The function of naloxone in opioid overdose is to
A) Block histamine
B) Reverse opioid binding
C) Enhance opioid action
D) Stimulate GABA
Q: First-generation antihistamines often cause
A) Sedation
B) Diarrhea
C) Tachycardia
D) Hypertension