2026 NCLEX-RN® Pharmacology Practice
Questions: Free Drug Guide & Test Bank
Description:
Master the drug knowledge you need to pass the NCLEX-RN® with this targeted 2026 study
guide. This resource is packed with essential nursing pharmacology practice questions and
detailed rationales covering cardiac meds, antibiotics, psychotropics, and more. We've updated
all content to reflect the latest NCLEX test plan and 2026 nursing standards, helping you learn
key interventions, side effects, and contraindications for high-yield medications. Each question is
designed to reinforce critical thinking for nursing school exams and build confidence for the big
day. Stop stressing over endless drug cards and start studying smarter.
Download your free pharmacology cheat sheet and boost your test readiness instantly!
, 2026 NCLEX Pharmacology Practice Questions & Answers
1. A patient is prescribed a medication for hypothyroidism resulting from a dysfunction of the
hypothalamus, pituitary, or thyroid gland. Which medication is most appropriate for this
condition?
a. Levothyroxine (T4)
b. Liothyronine (T3)
c. Methimazole
d. Propylthiouracil
Answer: a. Levothyroxine (T4)
Explanation: Levothyroxine is a synthetic form of the thyroid hormone thyroxine (T4). It is the
standard treatment for hypothyroidism, regardless of whether the origin of the dysfunction is in
the hypothalamus, pituitary gland, or the thyroid gland itself, as it effectively replaces the
deficient hormone.
2. A patient taking Digoxin reports visual disturbances. Which finding should the nurse anticipate?
a. Photophobia
b. Yellow-green halos around lights
c. Complete loss of peripheral vision
d. Blurred or double vision
Answer: d. Blurred or double vision
Explanation: Blurred vision, double vision (diplopia), and seeing yellow-green halos are classic
signs of Digoxin toxicity, which requires immediate assessment of serum Digoxin levels and
intervention.
3. A patient is receiving Phenobarbital for seizure control. Which nursing intervention is most
critical during intravenous administration?
a. Administering the dose rapidly to ensure therapeutic effect.
b. Monitoring for respiratory depression and excessive sedation.
c. Assessing for signs of hyperglycemia.
d. Encouraging fluid intake to prevent renal calculi.
Answer: b. Monitoring for respiratory depression and excessive sedation.
Explanation: Barbiturates like Phenobarbital depress the central nervous system. During IV
, administration, the risk of severe respiratory depression and sedation is high, necessitating close
monitoring of respiratory status and level of consciousness.
4. Which patient education point is essential for a client prescribed Spironolactone, a potassium-
sparing diuretic?
a. "Increase your intake of potassium-rich foods like bananas and oranges."
b. "Use salt substitutes freely to manage your blood pressure."
c. "Avoid high-potassium foods and salt substitutes to prevent hyperkalemia."
d. "This medication will likely cause your potassium levels to drop."
Answer: c. "Avoid high-potassium foods and salt substitutes to prevent hyperkalemia."
Explanation: Spironolactone promotes potassium retention in the kidneys. Consuming high-
potassium foods or salt substitutes (which often contain potassium chloride) can lead to
dangerous levels of potassium in the blood (hyperkalemia), which can cause fatal cardiac
dysrhythmias.
5. A patient is being treated for an acute myocardial infarction (MI). Which pair of medications is
commonly used in combination for this condition?
a. Warfarin and Vitamin K
b. Heparin and Alteplase
c. Clopidogrel and Gentamicin
d. Furosemide and Metoprolol
Answer: b. Heparin and Alteplase
Explanation: In an acute MI, the goal is to restore coronary blood flow. Alteplase is a
thrombolytic agent that breaks down the clot causing the infarction. It is often administered with
Heparin, an anticoagulant, to prevent further clot formation and reocclusion of the artery.
6. For which condition is Acetazolamide indicated?
a. Chronic hypertension
b. Acute mountain sickness
c. Status epilepticus
d. Urinary tract infections
Answer: b. Acute mountain sickness
Explanation: Acetazolamide is a carbonic anhydrase inhibitor that induces a mild metabolic
Questions: Free Drug Guide & Test Bank
Description:
Master the drug knowledge you need to pass the NCLEX-RN® with this targeted 2026 study
guide. This resource is packed with essential nursing pharmacology practice questions and
detailed rationales covering cardiac meds, antibiotics, psychotropics, and more. We've updated
all content to reflect the latest NCLEX test plan and 2026 nursing standards, helping you learn
key interventions, side effects, and contraindications for high-yield medications. Each question is
designed to reinforce critical thinking for nursing school exams and build confidence for the big
day. Stop stressing over endless drug cards and start studying smarter.
Download your free pharmacology cheat sheet and boost your test readiness instantly!
, 2026 NCLEX Pharmacology Practice Questions & Answers
1. A patient is prescribed a medication for hypothyroidism resulting from a dysfunction of the
hypothalamus, pituitary, or thyroid gland. Which medication is most appropriate for this
condition?
a. Levothyroxine (T4)
b. Liothyronine (T3)
c. Methimazole
d. Propylthiouracil
Answer: a. Levothyroxine (T4)
Explanation: Levothyroxine is a synthetic form of the thyroid hormone thyroxine (T4). It is the
standard treatment for hypothyroidism, regardless of whether the origin of the dysfunction is in
the hypothalamus, pituitary gland, or the thyroid gland itself, as it effectively replaces the
deficient hormone.
2. A patient taking Digoxin reports visual disturbances. Which finding should the nurse anticipate?
a. Photophobia
b. Yellow-green halos around lights
c. Complete loss of peripheral vision
d. Blurred or double vision
Answer: d. Blurred or double vision
Explanation: Blurred vision, double vision (diplopia), and seeing yellow-green halos are classic
signs of Digoxin toxicity, which requires immediate assessment of serum Digoxin levels and
intervention.
3. A patient is receiving Phenobarbital for seizure control. Which nursing intervention is most
critical during intravenous administration?
a. Administering the dose rapidly to ensure therapeutic effect.
b. Monitoring for respiratory depression and excessive sedation.
c. Assessing for signs of hyperglycemia.
d. Encouraging fluid intake to prevent renal calculi.
Answer: b. Monitoring for respiratory depression and excessive sedation.
Explanation: Barbiturates like Phenobarbital depress the central nervous system. During IV
, administration, the risk of severe respiratory depression and sedation is high, necessitating close
monitoring of respiratory status and level of consciousness.
4. Which patient education point is essential for a client prescribed Spironolactone, a potassium-
sparing diuretic?
a. "Increase your intake of potassium-rich foods like bananas and oranges."
b. "Use salt substitutes freely to manage your blood pressure."
c. "Avoid high-potassium foods and salt substitutes to prevent hyperkalemia."
d. "This medication will likely cause your potassium levels to drop."
Answer: c. "Avoid high-potassium foods and salt substitutes to prevent hyperkalemia."
Explanation: Spironolactone promotes potassium retention in the kidneys. Consuming high-
potassium foods or salt substitutes (which often contain potassium chloride) can lead to
dangerous levels of potassium in the blood (hyperkalemia), which can cause fatal cardiac
dysrhythmias.
5. A patient is being treated for an acute myocardial infarction (MI). Which pair of medications is
commonly used in combination for this condition?
a. Warfarin and Vitamin K
b. Heparin and Alteplase
c. Clopidogrel and Gentamicin
d. Furosemide and Metoprolol
Answer: b. Heparin and Alteplase
Explanation: In an acute MI, the goal is to restore coronary blood flow. Alteplase is a
thrombolytic agent that breaks down the clot causing the infarction. It is often administered with
Heparin, an anticoagulant, to prevent further clot formation and reocclusion of the artery.
6. For which condition is Acetazolamide indicated?
a. Chronic hypertension
b. Acute mountain sickness
c. Status epilepticus
d. Urinary tract infections
Answer: b. Acute mountain sickness
Explanation: Acetazolamide is a carbonic anhydrase inhibitor that induces a mild metabolic
