Illinois Pharmacist Licensing Examination
(NAPLEX) Practice Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
Question 1:
Which of the following antibiotics is classified as a macrolide?
A. Ciprofloxacin
B. Azithromycin
C. Doxycycline
D. Vancomycin
Answer: Azithromycin
Rationale: Azithromycin is a macrolide antibiotic that inhibits bacterial
protein synthesis by binding to the 50S ribosomal subunit.
Question 2:
A patient with chronic kidney disease requires a dose adjustment for which
,of the following drugs?
A. Loratadine
B. Metoprolol
C. Gabapentin
D. Lisinopril
Answer: Gabapentin
Rationale: Gabapentin is renally excreted, and dose adjustment is necessary
in patients with impaired renal function.
Question 3:
Which of the following is a loop diuretic?
A. Hydrochlorothiazide
B. Spironolactone
C. Furosemide
D. Amiloride
Answer: Furosemide
Rationale: Furosemide inhibits sodium and chloride reabsorption in the
ascending loop of Henle, resulting in potent diuresis.
Question 4:
A patient taking warfarin should avoid which of the following foods due to
vitamin K content?
,A. Apples
B. Spinach
C. Rice
D. Chicken
Answer: Spinach
Rationale: Spinach is high in vitamin K, which can antagonize warfarin and
reduce its anticoagulant effect.
Question 5:
Which of the following is the first-line treatment for anaphylaxis?
A. Diphenhydramine
B. Hydrocortisone
C. Epinephrine
D. Albuterol
Answer: Epinephrine
Rationale: Epinephrine is the drug of choice for anaphylaxis because it
rapidly reverses airway obstruction, hypotension, and shock.
Question 6:
Which of the following vaccines is contraindicated in immunocompromised
patients?
A. Influenza (inactivated)
, B. Hepatitis B
C. MMR (live attenuated)
D. Tdap
Answer: MMR (live attenuated)
Rationale: Live attenuated vaccines can cause disease in
immunocompromised individuals and are generally contraindicated.
Question 7:
A 70 kg patient requires vancomycin therapy with a loading dose of 25
mg/kg. What is the loading dose?
A. 1250 mg
B. 1500 mg
C. 1750 mg
D. 2000 mg
Answer: 1750 mg
Rationale: Loading dose = 25 mg/kg × 70 kg = 1750 mg.
Question 8:
Which antihypertensive class can cause a persistent dry cough?
A. Calcium channel blockers
B. Beta-blockers
(NAPLEX) Practice Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
Question 1:
Which of the following antibiotics is classified as a macrolide?
A. Ciprofloxacin
B. Azithromycin
C. Doxycycline
D. Vancomycin
Answer: Azithromycin
Rationale: Azithromycin is a macrolide antibiotic that inhibits bacterial
protein synthesis by binding to the 50S ribosomal subunit.
Question 2:
A patient with chronic kidney disease requires a dose adjustment for which
,of the following drugs?
A. Loratadine
B. Metoprolol
C. Gabapentin
D. Lisinopril
Answer: Gabapentin
Rationale: Gabapentin is renally excreted, and dose adjustment is necessary
in patients with impaired renal function.
Question 3:
Which of the following is a loop diuretic?
A. Hydrochlorothiazide
B. Spironolactone
C. Furosemide
D. Amiloride
Answer: Furosemide
Rationale: Furosemide inhibits sodium and chloride reabsorption in the
ascending loop of Henle, resulting in potent diuresis.
Question 4:
A patient taking warfarin should avoid which of the following foods due to
vitamin K content?
,A. Apples
B. Spinach
C. Rice
D. Chicken
Answer: Spinach
Rationale: Spinach is high in vitamin K, which can antagonize warfarin and
reduce its anticoagulant effect.
Question 5:
Which of the following is the first-line treatment for anaphylaxis?
A. Diphenhydramine
B. Hydrocortisone
C. Epinephrine
D. Albuterol
Answer: Epinephrine
Rationale: Epinephrine is the drug of choice for anaphylaxis because it
rapidly reverses airway obstruction, hypotension, and shock.
Question 6:
Which of the following vaccines is contraindicated in immunocompromised
patients?
A. Influenza (inactivated)
, B. Hepatitis B
C. MMR (live attenuated)
D. Tdap
Answer: MMR (live attenuated)
Rationale: Live attenuated vaccines can cause disease in
immunocompromised individuals and are generally contraindicated.
Question 7:
A 70 kg patient requires vancomycin therapy with a loading dose of 25
mg/kg. What is the loading dose?
A. 1250 mg
B. 1500 mg
C. 1750 mg
D. 2000 mg
Answer: 1750 mg
Rationale: Loading dose = 25 mg/kg × 70 kg = 1750 mg.
Question 8:
Which antihypertensive class can cause a persistent dry cough?
A. Calcium channel blockers
B. Beta-blockers
