PHARMACOLOGY 230 LATEST FINAL
EXAM REAL 2025/2026: 300 Complete
and Answers
Question 1
What is the study of how drugs enter the body, reach their site of action, are
metabolized, and exit the body called?
A) Pharmacodynamics
B) Pharmacokinetics
C) Pharmacotherapeutics
D) Pharmacognosy
Answer: B
Rationale: Pharmacokinetics describes the movement of drugs through the body,
including absorption, distribution, metabolism, and excretion (ADME).
Pharmacodynamics (A) is the study of what drugs do to the body and their
mechanisms of action .
Question 2
A nurse is teaching a patient about enteric-coated medications. Which statement
by the patient indicates understanding?
A) "I can crush the tablet for easier swallowing."
B) "The coating protects my stomach from irritation."
C) "It will work faster than a regular tablet."
D) "The coating dissolves in my mouth."
Answer: B
Rationale: Enteric coatings protect the drug from stomach acid, preventing gastric
irritation and delaying release until the small intestine. Crushing destroys this
protection .
Question 3
A patient is prescribed a drug with a half-life of 4 hours. How long will it take for
,the drug to reach a steady state?
A) 8 hours
B) 12 hours
C) 20 hours
D) 24 hours
Answer: C
Rationale: Steady state is reached after approximately 4-5 half-lives. 5 × 4 hours =
20 hours .
Question 4
The nurse administers naloxone (Narcan) to a patient with opioid overdose. This is
an example of:
A) Agonist
B) Antagonist
C) Partial agonist
D) Synergistic effect
Answer: B
Rationale: Naloxone is a competitive antagonist that binds to opioid receptors
without activating them, reversing opioid effects .
Question 5
The cytochrome P450 enzyme system is primarily involved in:
A) Drug absorption in the GI tract
B) Drug distribution to tissues
C) Drug metabolism in the liver
D) Drug excretion by the kidneys
Answer: C
Rationale: CYP450 enzymes (especially in the liver) metabolize many drugs.
Inducers or inhibitors can cause significant drug interactions .
Question 6
A drug's therapeutic index is low. The nurse understands this means:
A) The drug has a wide safety margin
B) The drug requires no monitoring
,C) There is a small margin between effective and toxic doses
D) The drug is safe for over-the-counter use
Answer: C
Rationale: Low therapeutic index drugs (e.g., digoxin, lithium, warfarin) require
close monitoring because the toxic dose is close to the effective dose .
Question 7
Which herbal supplement is known to increase bleeding risk if taken with
warfarin?
A) Echinacea
B) St. John's Wort
C) Ginkgo biloba
D) Saw palmetto
Answer: C
Rationale: Ginkgo biloba, garlic, and ginseng have antiplatelet effects and
increase bleeding when combined with anticoagulants like warfarin .
Question 8
The nurse administers a drug via the intramuscular (IM) route. Which rate applies
to IM absorption?
A) Slower than subcutaneous
B) Faster than intravenous
C) Faster than subcutaneous but slower than IV
D) Same as oral
Answer: C
Rationale: IM absorption is faster than subcutaneous (due to greater blood flow)
but slower than direct IV administration .
Question 9
A patient is prescribed a sustained-release capsule. What should the nurse teach?
A) Open and sprinkle on applesauce if hard to swallow
B) Chew the capsule for faster release
C) Swallow whole without crushing or chewing
D) Take with grapefruit juice to enhance absorption
, Answer: C
Rationale: Sustained-release formulations must be swallowed whole. Crushing or
chewing releases the entire dose at once, risk of toxicity .
Question 10
Which patient is at highest risk for a medication adverse reaction?
A) 25-year-old with a broken leg
B) 45-year-old with hypertension
C) 70-year-old with liver cirrhosis
D) 30-year-old with anxiety
Answer: C
Rationale: Elderly patients and those with liver disease have reduced drug
metabolism, greatly increasing risk of adverse reactions and toxicity .
Question 11
A patient refuses a scheduled medication. What should the nurse do first?
A) Document the refusal
B) Hide the medication in the patient's food
C) Explore the reason for refusal
D) Inform the provider immediately
Answer: C
Rationale: First, respectfully explore the reason (e.g., side effects, beliefs,
misunderstanding). Then educate, document, and inform provider if needed .
Question 12
A nurse identifies a medication error after administering a wrong dose. What is
the priority action?
A) Complete an incident report
B) Call the healthcare provider
C) Assess the patient for adverse effects
D) Notify the charge nurse
Answer: C
Rationale: Patient safety is always first. Assess for immediate harm, then notify
provider and charge nurse. Incident report follows .
EXAM REAL 2025/2026: 300 Complete
and Answers
Question 1
What is the study of how drugs enter the body, reach their site of action, are
metabolized, and exit the body called?
A) Pharmacodynamics
B) Pharmacokinetics
C) Pharmacotherapeutics
D) Pharmacognosy
Answer: B
Rationale: Pharmacokinetics describes the movement of drugs through the body,
including absorption, distribution, metabolism, and excretion (ADME).
Pharmacodynamics (A) is the study of what drugs do to the body and their
mechanisms of action .
Question 2
A nurse is teaching a patient about enteric-coated medications. Which statement
by the patient indicates understanding?
A) "I can crush the tablet for easier swallowing."
B) "The coating protects my stomach from irritation."
C) "It will work faster than a regular tablet."
D) "The coating dissolves in my mouth."
Answer: B
Rationale: Enteric coatings protect the drug from stomach acid, preventing gastric
irritation and delaying release until the small intestine. Crushing destroys this
protection .
Question 3
A patient is prescribed a drug with a half-life of 4 hours. How long will it take for
,the drug to reach a steady state?
A) 8 hours
B) 12 hours
C) 20 hours
D) 24 hours
Answer: C
Rationale: Steady state is reached after approximately 4-5 half-lives. 5 × 4 hours =
20 hours .
Question 4
The nurse administers naloxone (Narcan) to a patient with opioid overdose. This is
an example of:
A) Agonist
B) Antagonist
C) Partial agonist
D) Synergistic effect
Answer: B
Rationale: Naloxone is a competitive antagonist that binds to opioid receptors
without activating them, reversing opioid effects .
Question 5
The cytochrome P450 enzyme system is primarily involved in:
A) Drug absorption in the GI tract
B) Drug distribution to tissues
C) Drug metabolism in the liver
D) Drug excretion by the kidneys
Answer: C
Rationale: CYP450 enzymes (especially in the liver) metabolize many drugs.
Inducers or inhibitors can cause significant drug interactions .
Question 6
A drug's therapeutic index is low. The nurse understands this means:
A) The drug has a wide safety margin
B) The drug requires no monitoring
,C) There is a small margin between effective and toxic doses
D) The drug is safe for over-the-counter use
Answer: C
Rationale: Low therapeutic index drugs (e.g., digoxin, lithium, warfarin) require
close monitoring because the toxic dose is close to the effective dose .
Question 7
Which herbal supplement is known to increase bleeding risk if taken with
warfarin?
A) Echinacea
B) St. John's Wort
C) Ginkgo biloba
D) Saw palmetto
Answer: C
Rationale: Ginkgo biloba, garlic, and ginseng have antiplatelet effects and
increase bleeding when combined with anticoagulants like warfarin .
Question 8
The nurse administers a drug via the intramuscular (IM) route. Which rate applies
to IM absorption?
A) Slower than subcutaneous
B) Faster than intravenous
C) Faster than subcutaneous but slower than IV
D) Same as oral
Answer: C
Rationale: IM absorption is faster than subcutaneous (due to greater blood flow)
but slower than direct IV administration .
Question 9
A patient is prescribed a sustained-release capsule. What should the nurse teach?
A) Open and sprinkle on applesauce if hard to swallow
B) Chew the capsule for faster release
C) Swallow whole without crushing or chewing
D) Take with grapefruit juice to enhance absorption
, Answer: C
Rationale: Sustained-release formulations must be swallowed whole. Crushing or
chewing releases the entire dose at once, risk of toxicity .
Question 10
Which patient is at highest risk for a medication adverse reaction?
A) 25-year-old with a broken leg
B) 45-year-old with hypertension
C) 70-year-old with liver cirrhosis
D) 30-year-old with anxiety
Answer: C
Rationale: Elderly patients and those with liver disease have reduced drug
metabolism, greatly increasing risk of adverse reactions and toxicity .
Question 11
A patient refuses a scheduled medication. What should the nurse do first?
A) Document the refusal
B) Hide the medication in the patient's food
C) Explore the reason for refusal
D) Inform the provider immediately
Answer: C
Rationale: First, respectfully explore the reason (e.g., side effects, beliefs,
misunderstanding). Then educate, document, and inform provider if needed .
Question 12
A nurse identifies a medication error after administering a wrong dose. What is
the priority action?
A) Complete an incident report
B) Call the healthcare provider
C) Assess the patient for adverse effects
D) Notify the charge nurse
Answer: C
Rationale: Patient safety is always first. Assess for immediate harm, then notify
provider and charge nurse. Incident report follows .
