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: Aspirin inhibits pain by blocking
A) Sodium channels
B) COX enzymes
C) Beta receptors
D) Calcium receptors
Q: Paracetamol primarily acts on
A) Central nervous system
B) Liver cells
C) Respiratory tract
D) Kidneys
Q: Beta-blockers lower blood pressure by decreasing
A) Blood glucose
B) Heart rate
C) Oxygen saturation
D) Platelet count
Q: Warfarin prevents clot formation by inhibiting
A) Vitamin K action
B) Platelet aggregation
C) Fibrin production
D) Calcium absorption
Q: Atropine is classified as an
A) Antiviral agent
B) Anticholinergic drug
C) Antihistamine
D) Beta agonist
Q: Naloxone is used to reverse
A) Opioid overdose
B) Asthma attack
C) Hyperglycemia
D) Hypertension
Q: Diazepam enhances the action of
A) Dopamine
B) Acetylcholine
C) GABA
D) Serotonin
Q: Antacids relieve heartburn by neutralizing
A) Hormones
B) Gastric acid
C) Enzymes
D) Lipids
Q: The bioavailability of oral drugs is influenced by
A) Light exposure
B) First-pass metabolism
C) Skin temperature
D) Injection technique
Q: Drugs with narrow therapeutic index require
A) Rare usage
B) Close monitoring
C) No prescription
D) High dosage