PHARMACY – NAPLEX PRACTICE
EXAMINATION QUESTIONS WITH
CORRECT ANSWERS PLUS
RATIONALES 2026/2027 EDITION
WITH INSTANT PDF DOWNLOAD
1.
A patient with hypertension is prescribed lisinopril. Which
laboratory value is most important to monitor after initiation of
therapy?
A. Serum calcium
B. Serum sodium
C. Serum potassium
D. Serum bilirubin
Lisinopril is an angiotensin-converting enzyme (ACE) inhibitor that
can decrease aldosterone production and increase serum
potassium concentrations. Renal function and potassium should
therefore be monitored, particularly after initiation or dose
increases. Hyperkalemia can become clinically significant in
patients with renal impairment or those taking other potassium-
raising medications.
2.
,A patient taking warfarin has an INR of 6.2 without active
bleeding. Which medication is commonly used to reverse
excessive anticoagulation when clinically appropriate?
A. Protamine sulfate
B. Vitamin K
C. Idarucizumab
D. Naloxone
Vitamin K restores the synthesis of vitamin K–dependent clotting
factors and is used to reverse the effects of warfarin. The route
and dose depend on the INR, bleeding status, and urgency of
reversal. Protamine reverses heparin, idarucizumab reverses
dabigatran, and naloxone reverses opioid effects.
3.
Which antibiotic is most strongly associated with a risk of tendon
injury?
A. Amoxicillin
B. Azithromycin
C. Ciprofloxacin
D. Cephalexin
Fluoroquinolones such as ciprofloxacin have been associated
with tendinitis and tendon rupture. The risk is particularly
important in older adults and patients receiving corticosteroids.
Patients should be counseled to report tendon pain or swelling
promptly.
4.
A prescription requires 30 mL of a 2% w/v solution. How many
grams of drug are required?
,A. 0.06 g
B. 0.2 g
C. 0.6 g
D. 6 g
For a 2% w/v solution, there are 2 g of drug per 100 mL. Therefore,
30 mL × (2 g/100 mL) = 0.6 g.
5.
A patient taking metformin is scheduled for a procedure involving
iodinated contrast. What clinical parameter is particularly
important to assess?
A. Serum calcium
B. Renal function
C. Serum albumin
D. Thyroid-stimulating hormone
Metformin is primarily eliminated by the kidneys. Significant renal
impairment can increase metformin exposure and is associated
with an increased risk of lactic acidosis. Renal function should
therefore be assessed when contrast procedures are planned,
with management based on current clinical recommendations
and the patient's renal status.
6.
Which medication is a direct-acting oral anticoagulant that
directly inhibits factor Xa?
A. Warfarin
B. Dabigatran
C. Apixaban
D. Clopidogrel
, Apixaban directly inhibits factor Xa, reducing thrombin generation
and clot formation. Dabigatran is a direct thrombin inhibitor, while
warfarin inhibits vitamin K–dependent clotting-factor synthesis.
7.
A patient with asthma uses albuterol several times every day for
symptom relief. What does frequent use most likely indicate?
A. Adequate long-term control
B. Drug-induced tolerance that requires no intervention
C. Poorly controlled asthma requiring reassessment of
maintenance therapy
D. An indication to discontinue all inhaled medications
Frequent reliance on a short-acting beta-2 agonist suggests
inadequate asthma control. The patient's adherence, inhaler
technique, triggers, and controller therapy should be reassessed.
Overreliance on rescue therapy does not address the underlying
airway inflammation.
8.
Which insulin has the longest typical duration of action among
the following?
A. Regular insulin
B. Insulin lispro
C. NPH insulin
D. Insulin glargine
Insulin glargine is a long-acting basal insulin designed to provide
relatively sustained insulin activity. Regular insulin and lispro are
shorter-acting preparations, while NPH has an intermediate
duration.
EXAMINATION QUESTIONS WITH
CORRECT ANSWERS PLUS
RATIONALES 2026/2027 EDITION
WITH INSTANT PDF DOWNLOAD
1.
A patient with hypertension is prescribed lisinopril. Which
laboratory value is most important to monitor after initiation of
therapy?
A. Serum calcium
B. Serum sodium
C. Serum potassium
D. Serum bilirubin
Lisinopril is an angiotensin-converting enzyme (ACE) inhibitor that
can decrease aldosterone production and increase serum
potassium concentrations. Renal function and potassium should
therefore be monitored, particularly after initiation or dose
increases. Hyperkalemia can become clinically significant in
patients with renal impairment or those taking other potassium-
raising medications.
2.
,A patient taking warfarin has an INR of 6.2 without active
bleeding. Which medication is commonly used to reverse
excessive anticoagulation when clinically appropriate?
A. Protamine sulfate
B. Vitamin K
C. Idarucizumab
D. Naloxone
Vitamin K restores the synthesis of vitamin K–dependent clotting
factors and is used to reverse the effects of warfarin. The route
and dose depend on the INR, bleeding status, and urgency of
reversal. Protamine reverses heparin, idarucizumab reverses
dabigatran, and naloxone reverses opioid effects.
3.
Which antibiotic is most strongly associated with a risk of tendon
injury?
A. Amoxicillin
B. Azithromycin
C. Ciprofloxacin
D. Cephalexin
Fluoroquinolones such as ciprofloxacin have been associated
with tendinitis and tendon rupture. The risk is particularly
important in older adults and patients receiving corticosteroids.
Patients should be counseled to report tendon pain or swelling
promptly.
4.
A prescription requires 30 mL of a 2% w/v solution. How many
grams of drug are required?
,A. 0.06 g
B. 0.2 g
C. 0.6 g
D. 6 g
For a 2% w/v solution, there are 2 g of drug per 100 mL. Therefore,
30 mL × (2 g/100 mL) = 0.6 g.
5.
A patient taking metformin is scheduled for a procedure involving
iodinated contrast. What clinical parameter is particularly
important to assess?
A. Serum calcium
B. Renal function
C. Serum albumin
D. Thyroid-stimulating hormone
Metformin is primarily eliminated by the kidneys. Significant renal
impairment can increase metformin exposure and is associated
with an increased risk of lactic acidosis. Renal function should
therefore be assessed when contrast procedures are planned,
with management based on current clinical recommendations
and the patient's renal status.
6.
Which medication is a direct-acting oral anticoagulant that
directly inhibits factor Xa?
A. Warfarin
B. Dabigatran
C. Apixaban
D. Clopidogrel
, Apixaban directly inhibits factor Xa, reducing thrombin generation
and clot formation. Dabigatran is a direct thrombin inhibitor, while
warfarin inhibits vitamin K–dependent clotting-factor synthesis.
7.
A patient with asthma uses albuterol several times every day for
symptom relief. What does frequent use most likely indicate?
A. Adequate long-term control
B. Drug-induced tolerance that requires no intervention
C. Poorly controlled asthma requiring reassessment of
maintenance therapy
D. An indication to discontinue all inhaled medications
Frequent reliance on a short-acting beta-2 agonist suggests
inadequate asthma control. The patient's adherence, inhaler
technique, triggers, and controller therapy should be reassessed.
Overreliance on rescue therapy does not address the underlying
airway inflammation.
8.
Which insulin has the longest typical duration of action among
the following?
A. Regular insulin
B. Insulin lispro
C. NPH insulin
D. Insulin glargine
Insulin glargine is a long-acting basal insulin designed to provide
relatively sustained insulin activity. Regular insulin and lispro are
shorter-acting preparations, while NPH has an intermediate
duration.
